BE422207A - - Google Patents
Info
- Publication number
- BE422207A BE422207A BE422207DA BE422207A BE 422207 A BE422207 A BE 422207A BE 422207D A BE422207D A BE 422207DA BE 422207 A BE422207 A BE 422207A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2171214X | 1936-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE422207A true BE422207A (en:Method) |
Family
ID=19873789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE422207D BE422207A (en:Method) | 1936-06-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2171214A (en:Method) |
| BE (1) | BE422207A (en:Method) |
| FR (1) | FR823347A (en:Method) |
| NL (1) | NL50457C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2420744A (en) * | 1944-05-04 | 1947-05-20 | Rca Corp | High-frequency oscillator of the secondary electron-emission type |
| BE481988A (en:Method) * | 1947-04-21 | |||
| DE1193614B (de) * | 1960-03-11 | 1965-05-26 | English Electric Valve Co Ltd | Elektronenroehre mit einem mit sekundaer-emissionsfaehigem Material bedeckten Gitter |
-
0
- NL NL50457D patent/NL50457C/xx active
- BE BE422207D patent/BE422207A/xx unknown
-
1937
- 1937-06-21 FR FR823347D patent/FR823347A/fr not_active Expired
- 1937-06-22 US US149581A patent/US2171214A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL50457C (en:Method) | |
| FR823347A (fr) | 1938-01-18 |
| US2171214A (en) | 1939-08-29 |