FR42178E - Improvements to electronic discharge valves - Google Patents
Improvements to electronic discharge valvesInfo
- Publication number
- FR42178E FR42178E FR42178DA FR42178E FR 42178 E FR42178 E FR 42178E FR 42178D A FR42178D A FR 42178DA FR 42178 E FR42178 E FR 42178E
- Authority
- FR
- France
- Prior art keywords
- discharge valves
- electronic discharge
- electronic
- valves
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/22—Heaters
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US559753A US1942080A (en) | 1931-08-27 | 1931-08-27 | Heater for indirectly heated cathodes |
Publications (1)
Publication Number | Publication Date |
---|---|
FR42178E true FR42178E (en) | 1933-05-31 |
Family
ID=24234877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR42178D Expired FR42178E (en) | 1931-08-27 | 1932-08-04 | Improvements to electronic discharge valves |
Country Status (3)
Country | Link |
---|---|
US (1) | US1942080A (en) |
FR (1) | FR42178E (en) |
GB (1) | GB390405A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2444072A (en) * | 1942-10-08 | 1948-06-29 | Raytheon Mfg Co | Gaseous electrical space discharge devices and circuits therefor |
US2514165A (en) * | 1942-11-23 | 1950-07-04 | M O Valve Co Ltd | Thermionic gas-filled rectifier |
US2424293A (en) * | 1944-03-09 | 1947-07-22 | Westinghouse Electric Corp | Thermionic cathode construction |
US2436907A (en) * | 1945-06-23 | 1948-03-02 | Nasa | Indirectly heated cathode |
US2653268A (en) * | 1950-05-01 | 1953-09-22 | Beverly D Kumpfer | Directly heated cathode structure |
US3295090A (en) * | 1962-02-26 | 1966-12-27 | Dale Electronics | Electrical resistor having a core element with high heat dissipating properties |
US3248680A (en) * | 1962-12-11 | 1966-04-26 | Ward Leonard Electric Co | Resistor |
US3265920A (en) * | 1964-06-22 | 1966-08-09 | Rauland Corp | Electron-discharge device cathode assembly with radiation shield |
-
1931
- 1931-08-27 US US559753A patent/US1942080A/en not_active Expired - Lifetime
-
1932
- 1932-08-04 FR FR42178D patent/FR42178E/en not_active Expired
- 1932-08-27 GB GB24002/32A patent/GB390405A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB390405A (en) | 1933-04-06 |
US1942080A (en) | 1934-01-02 |
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