FR957229A - - Google Patents
Info
- Publication number
- FR957229A FR957229A FR957229DA FR957229A FR 957229 A FR957229 A FR 957229A FR 957229D A FR957229D A FR 957229DA FR 957229 A FR957229 A FR 957229A
- Authority
- FR
- France
- 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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/18—Supports; Vibration-damping arrangements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30742/46A GB635981A (en) | 1946-10-16 | 1946-10-16 | Improvements in or relating to supporting means for electrically heated filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR957229A true FR957229A (xx) | 1950-02-17 |
Family
ID=10312422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR957229D Expired FR957229A (xx) | 1946-10-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2521714A (xx) |
| BE (1) | BE477333A (xx) |
| ES (1) | ES179745A1 (xx) |
| FR (1) | FR957229A (xx) |
| GB (1) | GB635981A (xx) |
| NL (1) | NL74391C (xx) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1965338A (en) * | 1930-05-21 | 1934-07-03 | Western Electric Co | Thermionic discharge device |
| US2226680A (en) * | 1939-05-09 | 1940-12-31 | Fed Telegraph Co | Vacuum tube cathode support |
| US2298608A (en) * | 1939-11-07 | 1942-10-13 | Sperry Gyroscope Co Inc | Memory type recorder |
| US2317222A (en) * | 1941-03-20 | 1943-04-20 | Bell Telephone Labor Inc | Electron discharge device |
| US2399004A (en) * | 1943-02-12 | 1946-04-23 | Gen Electric | Electric discharge device and method of fabrication |
| US2419124A (en) * | 1943-11-10 | 1947-04-15 | Westinghouse Electric Corp | Insulating means for metallic spacers in electron discharge devices |
| US2404042A (en) * | 1944-10-12 | 1946-07-16 | Westinghouse Electric Corp | Electron discharge device |
-
0
- FR FR957229D patent/FR957229A/fr not_active Expired
- NL NL74391D patent/NL74391C/xx active
- BE BE477333D patent/BE477333A/xx unknown
-
1946
- 1946-10-16 GB GB30742/46A patent/GB635981A/en not_active Expired
-
1947
- 1947-09-16 ES ES0179745A patent/ES179745A1/es not_active Expired
- 1947-11-29 US US788785A patent/US2521714A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2521714A (en) | 1950-09-12 |
| BE477333A (xx) | |
| GB635981A (en) | 1950-04-19 |
| NL74391C (xx) | |
| ES179745A1 (es) | 1947-11-01 |