BE720578A - - Google Patents
Info
- Publication number
- BE720578A BE720578A BE720578DA BE720578A BE 720578 A BE720578 A BE 720578A BE 720578D A BE720578D A BE 720578DA BE 720578 A BE720578 A BE 720578A
- 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 |
|---|---|---|---|
| GB4133167A GB1141415A (en) | 1967-09-11 | 1967-09-11 | Improvements in or relating to thermionic filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE720578A true BE720578A (xx) | 1969-03-10 |
Family
ID=10419195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE720578D BE720578A (xx) | 1967-09-11 | 1968-09-09 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE720578A (xx) |
| FR (1) | FR1597524A (xx) |
| GB (1) | GB1141415A (xx) |
| NL (1) | NL6812814A (xx) |
-
1967
- 1967-09-11 GB GB4133167A patent/GB1141415A/en not_active Expired
-
1968
- 1968-09-07 NL NL6812814A patent/NL6812814A/xx unknown
- 1968-09-09 BE BE720578D patent/BE720578A/xx unknown
- 1968-09-11 FR FR1597524D patent/FR1597524A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6812814A (xx) | 1969-03-13 |
| FR1597524A (xx) | 1970-06-29 |
| GB1141415A (en) | 1969-01-29 |