BE479731A - - Google Patents
Info
- Publication number
- BE479731A BE479731A BE479731DA BE479731A BE 479731 A BE479731 A BE 479731A BE 479731D A BE479731D A BE 479731DA BE 479731 A BE479731 A BE 479731A
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/26—Supports for the emissive material
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2198939A GB530300A (en) | 1939-07-28 | 1939-07-28 | Improvements relating to thermionic valves and to cathode structures therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479731A true BE479731A (en:Method) |
Family
ID=10172127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479731D BE479731A (en:Method) | 1939-07-28 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE479731A (en:Method) |
| GB (1) | GB530300A (en:Method) |
-
0
- BE BE479731D patent/BE479731A/xx unknown
-
1939
- 1939-07-28 GB GB2198939A patent/GB530300A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB530300A (en) | 1940-12-09 |