BE427645A - - Google Patents
Info
- Publication number
- BE427645A BE427645A BE427645DA BE427645A BE 427645 A BE427645 A BE 427645A BE 427645D A BE427645D A BE 427645DA BE 427645 A BE427645 A BE 427645A
- 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 |
|---|---|---|---|
| DE513879X | 1937-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE427645A true BE427645A (fr) |
Family
ID=6548536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE427645D BE427645A (fr) | 1937-04-23 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2238634A (fr) |
| BE (1) | BE427645A (fr) |
| FR (1) | FR836986A (fr) |
| GB (1) | GB513879A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2728014A (en) * | 1951-04-26 | 1955-12-20 | Rca Corp | Electron lens for multiplier phototubes with very low spherical aberration |
-
0
- BE BE427645D patent/BE427645A/xx unknown
-
1938
- 1938-04-21 US US203418A patent/US2238634A/en not_active Expired - Lifetime
- 1938-04-22 GB GB12126/38A patent/GB513879A/en not_active Expired
- 1938-04-22 FR FR836986D patent/FR836986A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR836986A (fr) | 1939-01-31 |
| GB513879A (en) | 1939-10-24 |
| US2238634A (en) | 1941-04-15 |