BE440985A - - Google Patents
Info
- Publication number
- BE440985A BE440985A BE440985DA BE440985A BE 440985 A BE440985 A BE 440985A BE 440985D A BE440985D A BE 440985DA BE 440985 A BE440985 A BE 440985A
- 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 |
|---|---|---|---|
| GB2542839A GB534576A (en) | 1939-09-08 | 1939-09-08 | Improvements in or relating to electron discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE440985A true BE440985A (en:Method) |
Family
ID=10227507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE440985D BE440985A (en:Method) | 1939-09-08 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE440985A (en:Method) |
| FR (1) | FR868378A (en:Method) |
| GB (1) | GB534576A (en:Method) |
-
0
- BE BE440985D patent/BE440985A/xx unknown
-
1939
- 1939-09-08 GB GB2542839A patent/GB534576A/en not_active Expired
-
1940
- 1940-12-26 FR FR868378D patent/FR868378A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB534576A (en) | 1941-03-11 |
| FR868378A (fr) | 1941-12-29 |