BE467619A - - Google Patents
Info
- Publication number
- BE467619A BE467619A BE467619DA BE467619A BE 467619 A BE467619 A BE 467619A BE 467619D A BE467619D A BE 467619DA BE 467619 A BE467619 A BE 467619A
- 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
- H01J1/22—Heaters
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2542639A GB534575A (en) | 1939-09-08 | 1939-09-08 | Improvements in or relating to indirectly heated cathode structures for electron discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE467619A true BE467619A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) |
Family
ID=10227468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE467619D BE467619A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | 1939-09-08 |
Country Status (4)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147732B (en) * | 1983-10-07 | 1987-11-04 | English Electric Valve Co Ltd | Improvements in or relating to travelling wave tubes |
-
0
- BE BE467619D patent/BE467619A/xx unknown
-
1939
- 1939-09-08 GB GB2542639A patent/GB534575A/en not_active Expired
-
1946
- 1946-12-27 FR FR943721D patent/FR943721A/fr not_active Expired
-
1947
- 1947-02-15 ES ES176816A patent/ES176816A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES176816A1 (es) | 1947-03-16 |
| FR943721A (fr) | 1949-03-16 |
| GB534575A (en) | 1941-03-11 |