US2433361A
(en)
*
|
1940-01-20 |
1947-12-30 |
Submarine Signal Co |
Method and apparatus for echo ranging
|
DE938386C
(de)
*
|
1941-04-01 |
1956-01-26 |
Heinz Fleck Dr |
Gleichrichter mit Gegenkopplung auf einen vorgeschalteten Verstaerker
|
BE446845A
(xx)
*
|
1941-08-16 |
|
|
|
DE943955C
(de)
*
|
1942-01-18 |
1956-06-07 |
Telefunken Gmbh |
Auf Frequenzaenderungen ansprechende Schaltungsanordnung
|
US2434914A
(en)
*
|
1942-04-21 |
1948-01-27 |
Standard Telephones Cables Ltd |
Frequency indicating cathode-ray oscilloscope
|
US2447098A
(en)
*
|
1943-06-28 |
1948-08-17 |
Stanolind Oil & Gas Co |
Signaling system
|
US2523341A
(en)
*
|
1943-11-02 |
1950-09-26 |
Int Standard Electric Corp |
Vibrating device
|
US2457136A
(en)
*
|
1943-12-08 |
1948-12-28 |
Int Standard Electric Corp |
Arrangement for frequency measurements
|
US2425999A
(en)
*
|
1943-12-20 |
1947-08-19 |
Gen Electric |
Signal portraying apparatus
|
DE898036C
(de)
*
|
1944-01-04 |
1953-11-26 |
Svenska Aktiebolag Gasaccumula |
Vorrichtung zum Messen von Phasenwinkeln, beispielsweise fuer die Bestimmung einer Funkpeilrichtung
|
GB577758A
(en)
*
|
1944-03-25 |
1946-05-30 |
Eric Lawrence Casling White |
Improvements in or relating to apparatus for transmitting or receiving frequency-modulated oscillations
|
US2527523A
(en)
*
|
1944-08-11 |
1950-10-31 |
Farnsworth Res Corp |
Frequency control system
|
US2444651A
(en)
*
|
1944-11-30 |
1948-07-06 |
Rca Corp |
Shaping circuit for cathode beam tubes
|
US2541067A
(en)
*
|
1944-11-30 |
1951-02-13 |
Sperry Corp |
Frequency responsive device
|
US2477570A
(en)
*
|
1945-01-05 |
1949-08-02 |
Russell A Berg |
Radio relay system
|
US2495023A
(en)
*
|
1945-05-03 |
1950-01-17 |
Paul B Sebring |
Discriminator circuit
|
NL70931C
(xx)
*
|
1945-06-14 |
|
|
|
DE977658C
(de)
*
|
1945-09-07 |
1968-01-25 |
Rca Corp |
Detektor fuer phasenwinkelmodulierte Traegerfrequenzspannungen
|
US2648979A
(en)
*
|
1946-08-09 |
1953-08-18 |
Seismograph Service Corp |
Transducer testing apparatus
|
US2655036A
(en)
*
|
1947-10-01 |
1953-10-13 |
Gen Motors Corp |
Frequency modulated torsional vibration analyzer
|
US2620439A
(en)
*
|
1947-11-05 |
1952-12-02 |
Gen Electric |
Noise balancing circuits
|
US2543256A
(en)
*
|
1948-05-20 |
1951-02-27 |
Rca Corp |
Diversity receiver for multiplex frequency shift tones
|
NL144559B
(nl)
*
|
1949-01-27 |
|
Pechiney Saint Gobain |
Werkwijze ter bereiding van agglomeraten van actief aluminiumoxyde, alsmede gevormde agglomeraten van actief aluminiumoxyde verkregen volgens deze werkwijze.
|
NL82934C
(xx)
*
|
1949-05-13 |
|
|
|
US2613271A
(en)
*
|
1950-04-07 |
1952-10-07 |
Rca Corp |
Tuning indicator for frequency shift telegraphy
|
US2688726A
(en)
*
|
1951-01-11 |
1954-09-07 |
Northrop Aircraft Inc |
Phase-amplitude-frequency measuring system
|
US2692947A
(en)
*
|
1951-05-11 |
1954-10-26 |
Sperry Corp |
Locator of inflection points of a response curve
|
DE921389C
(de)
*
|
1951-12-06 |
1954-12-16 |
Sueddeutsche Telefon App |
Umschaltbarer UEberlagerungsempfaenger fuer AM/FM-UEbertragungen
|
DE949242C
(de)
*
|
1952-03-16 |
1956-09-13 |
Blaupunkt Werke G M B H Zweign |
UEberlagerungsempfaenger fuer frequenzmodulierte Schwingungen mit automatischer Scharfeinstellung
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US2835803A
(en)
*
|
1953-10-12 |
1958-05-20 |
Esther Marion Armstrong |
Linear detector for subcarrier frequency modulated waves
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BE532476A
(xx)
*
|
1953-10-12 |
|
|
|
NL102009C
(xx)
*
|
1953-10-21 |
|
|
|
US2880315A
(en)
*
|
1954-10-05 |
1959-03-31 |
Gen Electric |
Angular modulation detector
|
DE976553C
(de)
*
|
1954-10-28 |
1963-11-14 |
Telefunken Patent |
Empfaenger fuer Telegrafie-Nachrichten mit Frequenzumtastung
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US3015776A
(en)
*
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1957-02-09 |
1962-01-02 |
Sud Atlas Werke G M B H |
Indicating fluctuations in frequency and amplitude
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US9063067B1
(en)
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2010-11-17 |
2015-06-23 |
Alvin P. Schmitt |
Moisture sensing devices
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US8879919B2
(en)
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2011-09-09 |
2014-11-04 |
Harris Corporation |
Photonic communications device with an FM/PM discriminator and related methods
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US8526817B2
(en)
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2012-01-24 |
2013-09-03 |
Harris Corporation |
Communications device with discriminator for generating intermediate frequency signal and related methods
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US8620158B2
(en)
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2012-01-24 |
2013-12-31 |
Harris Corporation |
Communications device with discriminator and wavelength division multiplexing for generating intermediate frequency signal and related methods
|