BE441617A - - Google Patents
Info
- Publication number
- BE441617A BE441617A BE441617DA BE441617A BE 441617 A BE441617 A BE 441617A BE 441617D A BE441617D A BE 441617DA BE 441617 A BE441617 A BE 441617A
- 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
- H01J1/26—Supports for the emissive material
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL50640X | 1940-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441617A true BE441617A (en:Method) |
Family
ID=19756154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441617D BE441617A (en:Method) | 1940-06-05 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE441617A (en:Method) |
| CH (1) | CH225248A (en:Method) |
| FR (1) | FR872829A (en:Method) |
| GB (1) | GB597470A (en:Method) |
| NL (1) | NL54119C (en:Method) |
-
0
- NL NL54119D patent/NL54119C/xx active
- BE BE441617D patent/BE441617A/xx unknown
-
1941
- 1941-06-03 FR FR872829D patent/FR872829A/fr not_active Expired
- 1941-06-03 CH CH225248D patent/CH225248A/de unknown
-
1945
- 1945-08-21 GB GB21307/45A patent/GB597470A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH225248A (de) | 1943-01-15 |
| FR872829A (fr) | 1942-06-19 |
| NL54119C (en:Method) | |
| GB597470A (en) | 1948-01-27 |