|
US2735982A
(en)
*
|
|
1956-02-21 |
|
Radio frequency power comparator |
|
US2492138A
(en)
*
|
1940-02-23 |
1949-12-27 |
Int Standard Electric Corp |
Mechanical modulator for radio beacons utilizing two tones
|
|
US2416790A
(en)
*
|
1941-01-28 |
1947-03-04 |
Sperry Gyroscope Co Inc |
Transmission line bridge circuit
|
|
GB581734A
(en)
*
|
1941-04-04 |
1946-10-23 |
Sperry Gyroscope Co Inc |
Improvements in or relating to instrument landing systems for aircraft
|
|
US2426992A
(en)
*
|
1942-05-27 |
1947-09-09 |
Sperry Gyroscope Co Inc |
Glide path transmitter
|
|
US2439255A
(en)
*
|
1942-09-09 |
1948-04-06 |
Gen Electric |
Capacitor switch
|
|
FR948355A
(fr)
*
|
1942-12-31 |
1949-07-29 |
Western Electric Co |
Dispositif de couplage utilisables dans les systèmes de transmission d'ondes
|
|
NL94033C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1942-12-31 |
|
|
|
|
US2415242A
(en)
*
|
1943-02-25 |
1947-02-04 |
Rca Corp |
Switching in wave guide transmission system
|
|
US2415932A
(en)
*
|
1943-04-21 |
1947-02-18 |
Rca Corp |
Antenna system
|
|
US2594409A
(en)
*
|
1943-07-27 |
1952-04-29 |
Bell Telephone Labor Inc |
Directive antenna
|
|
US2425328A
(en)
*
|
1944-08-01 |
1947-08-12 |
Frederic A Jenks |
Switching and modulation system
|
|
US2449451A
(en)
*
|
1944-09-28 |
1948-09-14 |
Westinghouse Electric Corp |
High-frequency dielectric heating apparatus
|
|
US2531777A
(en)
*
|
1945-10-24 |
1950-11-28 |
John N Marshall |
Variable directive coupler
|
|
BE491490A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1948-10-04 |
|
|
|
|
US2632108A
(en)
*
|
1949-07-28 |
1953-03-17 |
Rca Corp |
Diplexer arrangement
|
|
BE515436A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1951-11-10 |
1900-01-01 |
|
|
|
NL191136A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1953-10-01 |
|
|
|
|
US2831168A
(en)
*
|
1954-01-04 |
1958-04-15 |
Gen Electric |
Coupling device for wave transmission systems
|
|
GB770317A
(en)
*
|
1954-07-15 |
1957-03-20 |
Gen Electric Co Ltd |
Improvements in or relating to electric hybrid devices
|
|
US2959659A
(en)
*
|
1957-08-19 |
1960-11-08 |
Alford Andrew |
Electromagnetic heating unit
|
|
US3113314A
(en)
*
|
1960-09-01 |
1963-12-03 |
Forrest G Yetter |
Radio guidance and landing system
|
|
US3516025A
(en)
*
|
1968-12-19 |
1970-06-02 |
Adams Russel Co Inc |
Wide band hybrid coupler having an open end transmission line section coupled to each part
|
|
US4721929A
(en)
*
|
1986-10-17 |
1988-01-26 |
Ball Corporation |
Multi-stage power divider
|
|
US9088063B1
(en)
|
2015-03-11 |
2015-07-21 |
Werlatone, Inc. |
Hybrid coupler
|