BE417525A - - Google Patents
Info
- Publication number
- BE417525A BE417525A BE417525DA BE417525A BE 417525 A BE417525 A BE 417525A BE 417525D A BE417525D A BE 417525DA BE 417525 A BE417525 A BE 417525A
- Authority
- BE
- Belgium
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
- H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR809079T | 1935-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE417525A true BE417525A (en:Method) |
Family
ID=9253346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE417525D BE417525A (en:Method) | 1935-11-15 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2175582A (en:Method) |
| BE (1) | BE417525A (en:Method) |
| FR (1) | FR809079A (en:Method) |
| GB (2) | GB479270A (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2644031A (en) * | 1949-04-22 | 1953-06-30 | Time Inc | Scanning device |
| US2825838A (en) * | 1953-06-04 | 1958-03-04 | Csf | Electron sources |
| US3311774A (en) * | 1964-03-23 | 1967-03-28 | Westinghouse Electric Corp | Electron discharge device having a rotatable cathode therein |
| US3364373A (en) * | 1964-03-23 | 1968-01-16 | Westinghouse Electric Corp | Electron discharge device having a cathode element with a renewable electron emissive surface |
| US3290540A (en) * | 1964-04-16 | 1966-12-06 | Westinghouse Electric Corp | Electron discharge tube having a movable cathode tape |
-
0
- BE BE417525D patent/BE417525A/xx unknown
-
1935
- 1935-11-15 FR FR809079D patent/FR809079A/fr not_active Expired
-
1936
- 1936-11-02 US US108742A patent/US2175582A/en not_active Expired - Lifetime
- 1936-11-12 GB GB19109/37A patent/GB479270A/en not_active Expired
- 1936-11-12 GB GB30959/36A patent/GB479226A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB479226A (en) | 1938-02-02 |
| GB479270A (en) | 1938-02-02 |
| US2175582A (en) | 1939-10-10 |
| FR809079A (fr) | 1937-02-23 |