Storia delle telecomunicazioni-Radio -Storia della Radio-Armstrong documenti page 619

New York 18.December.1890 New York 01.February.1954

Patent GB 147042 Improvements in wireless receiving systems ( GB 147042 NL 7398 DE 480476)(3)

06 10 1914 US1113149 WIRELESS RECEIVING SYSTEM (2)Circuito di rigenerazione o ricevitore a reazione

E.H. Armstrong - Alcuni recenti sviluppi nel ricevitore Audion ( PIRE settembre 1915 pag. 215)

17 09 1915 US1334165 ELECTRIC WAVE TRANSMISSION

01 10 1915 US1336378 ANTENNA WITH DISTRIBUTED POSITIVE RESISTANCE

01 10 1915 US1388441 MULTIPLE ANTENNA FOR ELECTRICAL WAVE TRANSMISSION

07 11 1915 DK23377 Traadlöst Modtagesystem. (sistema di ricezione) (3)

10 02 1916 DK24748 Anordning ved traadlöse Modtagesystemer. ( Un dispositivo per Sistemi di ricezione) (3)

Operating features of the audion Edwin Howard Armstrong New York Academy of Sciences, 1917 - 29 pagine

E.H. Armstrong Studio della amplificazione eterodina mediante relè elettronico (PIRE aprile 1917 pag. 145)

Operating features of the audion Edwin Howard Armstrong New York Academy of Sciences, 1917 - 29 pag.

22 05 1917 FR20499 Dispositifs pour accroitre la sélectivité des circuits électriques (adittion brevet 485533) (3)

18 12 1917 US1416061 Radioreceiving System having High Selectivity - Empfänger mit hoher Trennschärfe

30 12 1918 FR501511 Method for receiving wireless signals
(US1342885 FR501511 GB 137271) (3)

08 02 1919 US1342885 Method for receiving wireless signals Supereterodina
(US1342885 FR501511 GB 137271) (3)

08 02 1919 US1342885 Method of Receiving High Frequency Oscillations - Superhterodynempfänger/Überlagerungsprinzip

09 07 1919 GB137271 Method for receiving wireless signals
(US1342885 FR501511 GB 137271) (3)

29 02 1920 DE480476 Wireless receiving systems ( GB 147042 NL 7398 DE 480476) (3)

10 08 1920 DK32154 Traadlöst Modtagesystem (3)

20 08 1920 NL7398 Wireless receiving systems ( GB 147042 NL 7398 DE 480476) (3)

27 06 1921 US1424065 Signaling System - Superregenerativ Empfänger
(US1424065 GB 182135 FR553079 DE479265 NL16958 )

E.H. Armstrong Alcuni recenti progressi nei circuiti reattivi ( PIRE agosto 1922 pag. 244)

24 02 1922 US1716573 - WAVE SIGNALING SYSTEM

26 06 1922 GB182135 Relating to wireless signalling systems
(US1424065 GB 182135 FR553079 DE479265 NL16958 ) (3)

20 06 1922 FR553079 Signalling systems

(US1424065 GB 182135 FR553079 DE479265 NL16958 ) (3)

23 06 1922 DK34006 Fremgangsmaade og Apparat til Forstärkning af varierende elektriske Strömme
(Procedure and apparatus for GAIN of varying electrical currents-Schema per apparecchi per amplificazione di varie correnti elettriche ) (3)

08 06 1922 US1541780 WAVE SIGNALING SYSTEM

08 06 1922 US1539821 Wave Signaling System -

06 08 1922 US1539822 Wave Signaling System -

08 06 1922 US1541780 Wave Signaling System - (3)

08 06 1922 US1545724 WAVE SIGNALING SYSTEM

22 06 1922 NL16958 Signalling systems
(US1424065 GB 182135 FR553079 DE479265 NL16958 ) (3)

25 06 1922 DE479265 Signalling systems

(US1424065 GB 182135 FR553079 DE479265 NL16958 ) (3)

10 05 1923 US1675323 - WAYS SIGNALING SYSTEM

La Superhétérodyne et la Superréaction. Principes et pratique. Détails de construction. Étude comparée de leurs propriétés et de leur évolution. Préface de M. André Blondel, membre de l'Institut. Exposés de l'historique de la superhétérodyne, par MM. Armstrong et Lévy

08 05 1926 US1611848 WIRELESS RECEIVING SYSTEM FOR CONTINUOUS WAVES
(see Patent GB 191424231 and Patent FR 476770)

La superhétérodyne et la superréaction: Principes et pratique. Détails de construction. Étude comparée de leurs propriétés et de leur évolution Pierre Hémardinquer, Edwin Howard Armstrong, Lucien Lévy É. Chiron, 1927 - 170 pagine

18 05 1927 US1941447 Radio Telephone Signaling - Vermeidung von Fading und atmosphärischen Störungen durch die FM-Modulation

18 06 1928 GB290642 Radio telephone signalling (3)

30 07 1930 US1941066 sistema radiofonico Fm (frequency modulation) Brevet range radio Fm Störabstandsverbesserung für FM-Empfänger (US1941066 FR723056 GB380876 )

29 07 1931 FR723056 Relating to radio signalling systems (US1941066 FR723056 GB 380876 ) (3)

13 07 1931 GB380876 Relating to radio signalling systems
(US1941066 FR723056 GB 380876 ) (3)

20 10 1932 US1941067 Radio Broadcasting and Receiving

24 01 1933 DE621204 Radiosignaling
(US1941068-1933 NL44759-1938 DE621204-1935 FR771090-1934) (3)

24 01 1933 US1941068 Radiosignaling - FM-Modulation und Demodulation
(US1941068-1933 NL44759-1938 DE621204-1935 FR771090-1934)

24 01 1933 US1941069 Radiosignaling - Reichweitenerhöhung hoher Radiofrequenzen durch FM-Modulation(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228)

29 08 1933 CA335160 RADIO TELEPHONE SIGNALLING SYSTEM (3)

24 01 1934 GB426228 Relating to radio signalling
(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228) (3)

24 01 1934 FR771090 Radiosignaling
(US1941068-1933 NL44759-1938 DE621204-1935 FR771090-1934) (3)

24 01 1934 FR771091 Radio signalling
(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228)(3)

24 01 1934 NL44759 Radiosignaling
(US1941068-1933 NL44759-1938 DE621204-1935 FR771090-1934)(3)

24 01 1934 NL 44760 radio signalling
(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228)(3)

14 09 1935 US2098698 RADIO TRANSMITTING SYSTEM

14 09 1935 US2085940 - PHASE CONTROL SYSTEM

14 09 1935 US2104012 Multiplex Radio Signaling System - Verfahren für Multiplex-FM-Übertragungen
(US 2104012 GB 481527 FR 811208NL 51362 )

14 09 1935 US2122401 FREQUENCY CHANGING SYSTEM

14 09 1935 US2116501 Radio receiving system (US2116501 FR810606 NL46606 GB 481526) (3)

24 12 1935 CA354865 RADIO SIGNALLING SYSTEM (3)

25 01 1936 DE924809 radio signalling
(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228)(3)

25 08 1936 US2116502 RADIO RECEIVING SYSTEM

25 08 1936 US2203712 - RADIO TRANSMITTING SYSTEM

10 09 1936 NL46606 Radio receiving system (US2116501 FR810606 NL46606 GB 481526) (3)

(US 2104012 GB 481527 FR 811208NL 51362 ) (3)

12 09 1936 GB 481526 Relating to radio receiving systems (US2116501 FR810606 NL46606 GB 481526) (3)

12 09 1936 GB481527 Relating to multiplex radio signalling systems
(US 2104012 GB 481527 FR 811208NL 51362 ) (3)

A method of reducing disturbances in radio signaling by a system of frequency modulation Edwin Howard Armstrong 1936 - 52 pagine

14 09 1936 FR810606 Radio receiving system (US2116501 FR810606 NL46606 GB 481526)(3)

14 09 1936 FR811208 Multiplex radio signaling system (US 2104012 GB 481527 FR 811208NL 51362 )(3)

16 01 1937 US2169212 - RADIO TRANSMITTING SYSTEM

20 04 1939 BE433916 radio signalling
(US1941069 FR771091 DE924809 BE433916 NL44760 GB 426227 GB 426228)(3)

Evolution of frequency modulation Edwin Howard Armstrong 1940 - 11 pagine

12 01 1940 US2540643 FREQUENCY-MODULATED CARRIER

12 01 1940 US2276008 RADIO REBROADCASTING SYSTEM E. H. ARMSTRONG
( US2276008 BE473378 FR946481 GB 621229 )

12 01 1940 US2318137 - MEANS FOR RECEIVING RADIO SIGNALS

12 01 1940 US2290159 FREQUENCY MODULATION SYSTEM
( US2290159-1942 FR946097-1949 NL67371-1951 BE473157-1947 GB 621288-1949)

12 01 1940 US2275486 - MEANS AND METHOD FOR RELAYING

12 01 1940 US2264608 FREQUENCY MODULATED SIGNALS (US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949)

19 02 1940 US2215284 FREQUENCY MODULATION SIGNALING SYSTEM
(US RE21660-1940 US2215284-1940 BE472015-1947 FR 942970-1949 )

19 02 1940 US re 21660 Frequency modulation signaling system
(US RE21660-1940 US2215284-1940 BE472015-1947 FR 942970-1949 ) (3)

02 08 1940 US2295323 CURRENT LIMITING DEVICE

( US2315308 BE472792 FR946308 GB 623222 )(3)

12 10 1940 US 2323698 - FREQUENCY MODULATION SIGNALING (US2323698 BE472603 FR946480 GB 623220)(3)

Frequency modulation and its future uses Edwin Howard Armstrong American Academy of Political and Social Science, 1941 - 9 pagine

The new radio freedom Edwin Howard Armstrong 1941 - 4 pagine

Future of FM is viewed by its inventor:like story of the superheterodyne, a set for every purse Edwin Howard Armstrong 2 pag.

Nikola Tesla, 1857-1943 Edwin Howard Armstrong American Association for the Advancement of Science, 1943 - 2 pagine

30 03 1946 US2602885 RADIO SIGNALING ( US2602885 BE472016 FR942971 GB 634374 )

11 11 1946 GB634374 Broadcasting systems ( US2602885 BE472016 FR942971 ) (3)

11 01 1947 GB629676 Current limiting devices (3)

11 01 1947 GB623220 Frequency modulation signalling systems
(US2323698 BE472603 FR946480 GB 623220-1949) (3)

11 01 1947 GB623222 Method and means for transmitting frequency modulated signals
( US2315308 BE472792 FR946308 GB 623222 ) (3)

11 01 1947 GB621228 Frequency modulation systems
( US2290159-1942 FR946097-1949 NL67371-1951 BE473157-1947 GB 621288-1949) (3)

11 01 1947 GB621229 Radio rebroadcasting system ( US2276008 BE473378 FR946481 GB 621229 ) (3)

11 01 1947 GB623221 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

10 03 1947 FR 942970 Installation de radio-diffusion de signaux modulés en fréquence
(US RE21660-1940 US2215284-1940 BE472015-1947 FR 942970-1949 ) (3)

10 03 1947 FR942971 Radio signaling ( US2602885 BE472016 FR942971 GB 634374 )(3)

21 03 1947 BE472015 Frequency modulation signaling system
(US RE21660-1940 US2215284-1940 BE472015-1947 FR 942970-1949 ) (3)

21 03 1947 BE472016 Radio signaling ( US2602885 BE472016 FR942971 GB 634374 )(3)

20 03 1947 BE473378 Radio rebroadcasting system ( US2276008 BE473378 FR946481 GB 621229 ) (3)

24 04 1947 BE472792 Method and means for transmitting frequency modulated signals
( US2315308 BE472792 FR946308 GB 623222 ) (3)

17 04 1947 BE472603 Frequency modulation signalling systems
(US2323698 BE472603 FR946480 GB 623220)(3)

19 04 1947 BE472677 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949

FR946307-1949 GB 623219-1949 GB623221-1949)(3)

05 05 1947 FR946097 Frequency modulation systems
( US2290159-1942 FR946097-1949 NL67371-1951 BE473157-1947 GB 621288-1949) (3)

07 05 1947 FR946308 Method and means for transmitting frequency modulated signals
( US2315308 BE472792 FR946308 GB 623222 ) (3)

07 05 1947 FR 946307 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

07 05 1947 FR946096 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

09 05 1947 FR946480 Frequency modulation signalling systems
(US2323698 BE472603 FR946480 GB 623220)(3)

09 05 1947 FR946481 Radio rebroadcasting system ( US2276008 BE473378 FR946481 GB 621229 )(3)

09 05 1947 BE473156 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

09 05 1947 BE473157 Frequency modulation systems
( US2290159-1942 FR946097-1949 NL67371-1951 BE473157-1947 GB 621288-1949)(3)

21 06 1947 NL 67371 Frequency modulation systems
( US2290159-1942 FR946097-1949 NL67371-1951 BE473157-1947 GB 621288-1949)(3)

24 06 1947 NL67372 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

07 08 1947 NL68041 Means and method for relaying frequency modulated signals
(US2264608-1941 BE473156-1947 BE472677-1947 NL67372-1951 NL68041-1951 FR946096-1949 FR946307-1949 GB 623219-1949 GB623221-1949) (3)

30 12 1947 US2738502 RADIO DETECTION AND RANGING SYSTEMS

A study of the operating characteristics of the ratio detector and its place in radio history Edwin Howard Armstrong, Radio Club of AmericaRadio Club of America, 1948 - 20 pagine

14 12 1948 GB741861 Radio detection and ranging systems (US 2738502 ) (3)

W. Rupert Mac Laurin and R. Joyce Harman, Invention & Innovation in the Radio Industry (1949, reprinted 1971);

01 06 1949 USA2630497 Frequency Modulation Multiplex System - Verbesserungen für Multiplex-FM-Übertragungen (US2630497 FR1021365 NL83428 DE845219 GB 668030) (1)

(US2630497 FR1021365 NL83428 DE845219 GB 668030)(3)

(US2630497 FR1021365 NL83428 DE845219 GB 668030) (3)

(US2630497 FR1021365 NL83428 DE845219 GB 668030)(3)

12 10 1953 US2773125 - MULTIPLEX FREQUENCY MODULATION (2)

United States District Court for the District of Delaware: Edwin H. Armstrong, plaintiff, against Radio Corporation of America and National Broadcasting Company, defendants ; civil action, Edizione 1139

Lawrence Lessing, Man of High Fidelity: Edwin Howard Armstrong (1956; reissued 1969), is a definitive biography.

Edwin H. Armstrong Edwin Howard Armstrong, Museum of History and Technology (U.S.). Division of Electricity & Nuclear Energy Smithsonian Institution, 1972 - 143 pagine

Don V. Erickson, Armstrong's Fight for FM Broadcasting:One Man vs Big Business and Bureaucracy (1973), provide historical background.

The Legacies of Edwin Howard Armstrong : the regenerative circuit, the superheterodyne circuit, the superregenerative circuit, frequency modulation / [John W. Morrisey, editor] Radio Club of America, c1991.Proceedings of the Radio Club of America ; v.64, no.3;