BE387951A - - Google Patents
Info
- Publication number
- BE387951A BE387951A BE387951DA BE387951A BE 387951 A BE387951 A BE 387951A BE 387951D A BE387951D A BE 387951DA BE 387951 A BE387951 A BE 387951A
- 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 |
|---|---|---|---|
| DE384136X | 1931-05-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE387951A true BE387951A (fr) |
Family
ID=6368729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE387951D BE387951A (fr) | 1931-05-01 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1946076A (fr) |
| BE (1) | BE387951A (fr) |
| FR (1) | FR735516A (fr) |
| GB (1) | GB384136A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739182C (de) * | 1935-01-12 | 1943-09-14 | Philips Patentverwaltung | Verfahren zur Herstellung einer indirekt beheizten Kathode fuer elektrische Entladungsroehren |
| DE904570C (de) * | 1940-10-30 | 1954-02-18 | Henry Kershaw | Verfahren zur Herstellung einer mantelfoermigen Kathode fuer Elektronenroehren |
-
0
- BE BE387951D patent/BE387951A/xx unknown
-
1932
- 1932-02-17 GB GB4751/32A patent/GB384136A/en not_active Expired
- 1932-04-18 FR FR735516D patent/FR735516A/fr not_active Expired
- 1932-05-14 US US611272A patent/US1946076A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1946076A (en) | 1934-02-06 |
| GB384136A (en) | 1932-12-01 |
| FR735516A (fr) | 1932-11-10 |