BE441895A - - Google Patents
Info
- Publication number
- BE441895A BE441895A BE441895DA BE441895A BE 441895 A BE441895 A BE 441895A BE 441895D A BE441895D A BE 441895DA BE 441895 A BE441895 A BE 441895A
- 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
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
- H01J43/18—Electrode arrangements using essentially more than one dynode
- H01J43/22—Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE215510X | 1938-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441895A true BE441895A (fr) |
Family
ID=5824336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441895D BE441895A (fr) | 1938-11-04 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2254793A (fr) |
| BE (1) | BE441895A (fr) |
| CH (1) | CH215510A (fr) |
| FR (1) | FR880348A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2435586A (en) * | 1941-12-20 | 1948-02-10 | Bell Telephone Labor Inc | Electron velocity sorting discharge device |
| US2451987A (en) * | 1944-03-17 | 1948-10-19 | Westinghouse Electric Corp | Electronic tube for ultra high frequencies |
-
0
- BE BE441895D patent/BE441895A/xx unknown
-
1939
- 1939-10-30 US US302022A patent/US2254793A/en not_active Expired - Lifetime
-
1940
- 1940-08-13 CH CH215510D patent/CH215510A/de unknown
-
1942
- 1942-03-20 FR FR880348D patent/FR880348A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH215510A (de) | 1941-06-30 |
| US2254793A (en) | 1941-09-02 |
| FR880348A (fr) | 1943-03-23 |