|
US2899591A
(en)
*
|
|
1959-08-11 |
|
Electrical heating device |
|
US2514925A
(en)
*
|
1942-11-09 |
1950-07-11 |
Gen Electric |
High-frequency electric discharge device and system therefor
|
|
US2454298A
(en)
*
|
1943-07-29 |
1948-11-23 |
Harold A Zahl |
Electronic tube
|
|
US2467420A
(en)
*
|
1943-11-18 |
1949-04-19 |
Jr Abraham Binneweg |
Short-wave adjustable radio tube
|
|
BE470922A
(US07122603-20061017-C00294.png)
*
|
1944-01-31 |
|
|
|
|
US2431273A
(en)
*
|
1944-04-17 |
1947-11-18 |
Rca Corp |
Electron discharge device employing a cavity resonator
|
|
US2462909A
(en)
*
|
1944-06-26 |
1949-03-01 |
Standard Telephones Cables Ltd |
High-frequency generator
|
|
US2452626A
(en)
*
|
1945-03-03 |
1948-11-02 |
Gen Electric X Ray Corp |
Electron emitter
|
|
US2459859A
(en)
*
|
1945-03-23 |
1949-01-25 |
Standard Telephones Cables Ltd |
Grid structure for electron discharge devices
|
|
US2446269A
(en)
*
|
1945-05-08 |
1948-08-03 |
Eitel Mccullough Inc |
Electrode mounting structure for electron tubes
|
|
US2441224A
(en)
*
|
1945-08-02 |
1948-05-11 |
Nat Union Radio Corp |
Electron discharge device
|
|
US2553580A
(en)
*
|
1945-08-22 |
1951-05-22 |
Sylvania Electric Prod |
Electron discharge device
|
|
US2472942A
(en)
*
|
1947-03-18 |
1949-06-14 |
Eitel Mccuilough Inc |
Electron tube
|
|
US2582684A
(en)
*
|
1949-07-12 |
1952-01-15 |
Eitel Mccullough Inc |
Electron tube structure
|
|
US2720608A
(en)
*
|
1951-03-13 |
1955-10-11 |
Wihtol Weltis |
Cathodes for electron tubes
|
|
BE511284A
(US07122603-20061017-C00294.png)
*
|
1951-05-11 |
|
|
|
|
US2695972A
(en)
*
|
1952-04-24 |
1954-11-30 |
Hartford Nat Bank & Trust Co |
Electric discharge tube for use at very high-frequencies and ultrahigh frequencies
|
|
GB820065A
(en)
*
|
1954-10-22 |
1959-09-16 |
Gen Electric |
Improvements relating to cathode structures for electric discharge devices
|
|
US2875367A
(en)
*
|
1954-10-22 |
1959-02-24 |
Gen Electric |
Cathode structures
|
|
US2878410A
(en)
*
|
1954-11-09 |
1959-03-17 |
Gen Electric |
Electronic tube structure
|
|
US2941109A
(en)
*
|
1957-10-25 |
1960-06-14 |
Eitel Mccullough Inc |
Tube having planar electrodes
|
|
DE1112209B
(de)
*
|
1959-03-20 |
1961-08-03 |
Siemens Ag |
Mittelbar geheizte Kathode mit einer scheibenfoermigen Emissionsflaeche und mit einer Halterung aus nahtlosem Folie-Rohr
|
|
US3263109A
(en)
*
|
1961-07-24 |
1966-07-26 |
Siemens Ag |
Electron source for corpuscular radiation apparatus operating on a pump including an indirectly heated cathode
|
|
US3187215A
(en)
*
|
1961-10-02 |
1965-06-01 |
Bendix Corp |
Spark gap device
|
|
US3246195A
(en)
*
|
1962-04-17 |
1966-04-12 |
Hitachi Ltd |
High-frequency electron tubes
|
|
US3522466A
(en)
*
|
1968-07-29 |
1970-08-04 |
Takeo Kamegaya |
Electric discharge lamps having hot cathode
|
