BE727440A - - Google Patents
Info
- Publication number
- BE727440A BE727440A BE727440DA BE727440A BE 727440 A BE727440 A BE 727440A BE 727440D A BE727440D A BE 727440DA BE 727440 A BE727440 A BE 727440A
- 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
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681639433 DE1639433A1 (en) | 1968-01-26 | 1968-01-26 | Helical cathode for electron beam tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE727440A true BE727440A (en) | 1969-07-28 |
Family
ID=5684013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE727440D BE727440A (en) | 1968-01-26 | 1969-01-27 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE727440A (en) |
| ES (1) | ES362945A1 (en) |
| FR (1) | FR2000799A1 (en) |
-
1969
- 1969-01-24 FR FR6901332A patent/FR2000799A1/fr not_active Withdrawn
- 1969-01-25 ES ES362945A patent/ES362945A1/en not_active Expired
- 1969-01-27 BE BE727440D patent/BE727440A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES362945A1 (en) | 1970-12-01 |
| FR2000799A1 (en) | 1969-09-12 |