BE478149A - - Google Patents
Info
- Publication number
- BE478149A BE478149A BE478149DA BE478149A BE 478149 A BE478149 A BE 478149A BE 478149D A BE478149D A BE 478149DA BE 478149 A BE478149 A BE 478149A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL264502X | 1946-11-13 | ||
| CH230150T | 1947-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE478149A true BE478149A (fr) |
Family
ID=25727444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE478149D BE478149A (fr) | 1946-11-13 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2489367A (fr) |
| BE (1) | BE478149A (fr) |
| CH (1) | CH264502A (fr) |
| DE (1) | DE890389C (fr) |
| FR (1) | FR57812E (fr) |
| GB (1) | GB652382A (fr) |
| NL (1) | NL63789C (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2626370A (en) * | 1949-05-26 | 1953-01-20 | Rca Corp | Filament structure for electron discharge device |
| US4100449A (en) * | 1976-04-05 | 1978-07-11 | Rca Corporation | Uniform filament and method of making the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1700454A (en) * | 1924-07-08 | 1929-01-29 | Western Electric Co | Electron emitter and process of making the same |
| US2112969A (en) * | 1926-12-11 | 1938-04-05 | Rca Corp | Cathode |
| NL38569C (fr) * | 1933-06-24 |
-
0
- NL NL63789D patent/NL63789C/xx active
- BE BE478149D patent/BE478149A/xx unknown
-
1947
- 1947-11-04 CH CH264502D patent/CH264502A/de unknown
- 1947-11-12 FR FR57812D patent/FR57812E/fr not_active Expired
- 1947-11-13 GB GB30192/47A patent/GB652382A/en not_active Expired
- 1947-12-06 US US790105A patent/US2489367A/en not_active Expired - Lifetime
-
1948
- 1948-11-05 DE DEP20749D patent/DE890389C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL63789C (fr) | |
| GB652382A (en) | 1951-04-25 |
| US2489367A (en) | 1949-11-29 |
| FR57812E (fr) | 1953-09-17 |
| DE890389C (de) | 1953-09-17 |
| CH264502A (de) | 1949-10-15 |