BE471303A - - Google Patents
Info
- Publication number
- BE471303A BE471303A BE471303DA BE471303A BE 471303 A BE471303 A BE 471303A BE 471303D A BE471303D A BE 471303DA BE 471303 A BE471303 A BE 471303A
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB51739A GB523574A (en) | 1939-01-06 | 1939-01-06 | Improvements relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471303A true BE471303A (en, 2012) |
Family
ID=9705751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471303D BE471303A (en, 2012) | 1939-01-06 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE471303A (en, 2012) |
| FR (1) | FR939426A (en, 2012) |
| GB (1) | GB523574A (en, 2012) |
-
0
- BE BE471303D patent/BE471303A/xx unknown
-
1939
- 1939-01-06 GB GB51739A patent/GB523574A/en not_active Expired
-
1946
- 1946-11-21 FR FR939426D patent/FR939426A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR939426A (fr) | 1948-11-15 |
| GB523574A (en) | 1940-07-17 |