BE440174A - - Google Patents
Info
- Publication number
- BE440174A BE440174A BE440174DA BE440174A BE 440174 A BE440174 A BE 440174A BE 440174D A BE440174D A BE 440174DA BE 440174 A BE440174 A BE 440174A
- 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 |
|---|---|---|---|
| NL217330X | 1939-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE440174A true BE440174A (fr) |
Family
ID=19779131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE440174D BE440174A (fr) | 1939-06-06 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2340631A (fr) |
| BE (1) | BE440174A (fr) |
| CH (1) | CH217330A (fr) |
| DE (1) | DE1074764B (fr) |
| FR (1) | FR868395A (fr) |
| GB (2) | GB544225A (fr) |
| NL (1) | NL52549C (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE477662A (fr) * | 1939-07-28 | |||
| BE450216A (fr) * | 1942-04-17 | |||
| US2674661A (en) * | 1948-08-12 | 1954-04-06 | Rca Corp | Electron multiplier device |
| US2909702A (en) * | 1948-10-01 | 1959-10-20 | Siemens Ag | Discharge vessel cooled by radiation |
| US2675431A (en) * | 1949-08-18 | 1954-04-13 | Nat Union Radio Corp | Transit time compensated multiplier tube |
-
0
- NL NL52549D patent/NL52549C/xx active
- DE DENDAT1074764D patent/DE1074764B/de active Pending
- BE BE440174D patent/BE440174A/xx unknown
-
1940
- 1940-06-03 GB GB9704/40A patent/GB544225A/en not_active Expired
- 1940-12-26 FR FR868395D patent/FR868395A/fr not_active Expired
- 1940-12-31 CH CH217330D patent/CH217330A/de unknown
-
1941
- 1941-08-21 US US407735A patent/US2340631A/en not_active Expired - Lifetime
-
1947
- 1947-12-31 GB GB35179/47A patent/GB629881A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR868395A (fr) | 1941-12-29 |
| CH217330A (de) | 1941-10-15 |
| GB544225A (en) | 1942-04-02 |
| DE1074764B (de) | 1960-02-04 |
| NL52549C (fr) | |
| GB629881A (en) | 1949-09-29 |
| US2340631A (en) | 1944-02-01 |