FR1093817A - Perfectionnements aux cathodes de tubes électroniques - Google Patents
Perfectionnements aux cathodes de tubes électroniquesInfo
- Publication number
- FR1093817A FR1093817A FR1093817DA FR1093817A FR 1093817 A FR1093817 A FR 1093817A FR 1093817D A FR1093817D A FR 1093817DA FR 1093817 A FR1093817 A FR 1093817A
- Authority
- FR
- France
- Prior art keywords
- cathodes
- electron tubes
- tubes
- electron
- 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
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB508853A GB749256A (en) | 1953-02-24 | 1953-02-24 | Improvements in or relating to cathodes for electron discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1093817A true FR1093817A (fr) | 1955-05-10 |
Family
ID=9789539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1093817D Expired FR1093817A (fr) | 1953-02-24 | 1954-02-23 | Perfectionnements aux cathodes de tubes électroniques |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1093817A (fr) |
GB (1) | GB749256A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2892115A (en) * | 1955-12-20 | 1959-06-23 | Itt | Cathode structures |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3374385A (en) * | 1963-07-10 | 1968-03-19 | Rca Corp | Electron tube cathode with nickel-tungsten alloy base and thin nickel coating |
US4184100A (en) * | 1977-03-29 | 1980-01-15 | Tokyo Shibaura Electric Co., Ltd. | Indirectly-heated cathode device for electron tubes |
-
1953
- 1953-02-24 GB GB508853A patent/GB749256A/en not_active Expired
-
1954
- 1954-02-23 FR FR1093817D patent/FR1093817A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2892115A (en) * | 1955-12-20 | 1959-06-23 | Itt | Cathode structures |
Also Published As
Publication number | Publication date |
---|---|
GB749256A (en) | 1956-05-23 |
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