NL72121C - - Google Patents
Info
- Publication number
- NL72121C NL72121C NL72121DA NL72121C NL 72121 C NL72121 C NL 72121C NL 72121D A NL72121D A NL 72121DA NL 72121 C NL72121 C NL 72121C
- Authority
- NL
- Netherlands
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 |
|---|---|---|---|
| GB20673/44A GB601966A (en) | 1945-10-24 | 1945-10-24 | Improvements in or relating to electron discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL72121C true NL72121C (en:Method) |
Family
ID=32188948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL72121D NL72121C (en:Method) | 1945-10-24 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2602905A (en:Method) |
| CH (1) | CH271504A (en:Method) |
| DE (1) | DE818820C (en:Method) |
| FR (1) | FR958107A (en:Method) |
| GB (2) | GB646303A (en:Method) |
| NL (1) | NL72121C (en:Method) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970327C (de) * | 1936-03-07 | 1958-09-11 | Pintsch Bamag Ag | Einrichtung zum Buendeln ultrakurzer elektromagnetischer Wellen |
| AT160558B (de) * | 1937-02-23 | 1941-07-25 | Philips Patentverwaltung | Elektrische Entladungsröhre. |
| NL50262C (en:Method) * | 1937-03-30 | |||
| BE428074A (en:Method) * | 1937-05-14 | |||
| US2390701A (en) * | 1943-01-27 | 1945-12-11 | Rca Corp | Secondary electron emitter |
-
0
- NL NL72121D patent/NL72121C/xx active
- FR FR958107D patent/FR958107A/fr not_active Expired
-
1945
- 1945-10-24 GB GB1676/48A patent/GB646303A/en not_active Expired
- 1945-10-24 GB GB20673/44A patent/GB601966A/en not_active Expired
-
1946
- 1946-09-07 US US695531A patent/US2602905A/en not_active Expired - Lifetime
-
1947
- 1947-12-29 CH CH271504D patent/CH271504A/de unknown
-
1949
- 1949-03-01 DE DEP35318D patent/DE818820C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH271504A (de) | 1950-10-31 |
| US2602905A (en) | 1952-07-08 |
| DE818820C (de) | 1951-10-29 |
| GB646303A (en) | 1950-11-22 |
| FR958107A (en:Method) | 1950-03-03 |
| GB601966A (en) | 1948-05-18 |