NL54367C - - Google Patents
Info
- Publication number
- NL54367C NL54367C NL54367DA NL54367C NL 54367 C NL54367 C NL 54367C NL 54367D A NL54367D A NL 54367DA NL 54367 C NL54367 C NL 54367C
- Authority
- NL
- Netherlands
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 |
|---|---|---|---|
| DE217878X | 1940-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54367C true NL54367C (fr) |
Family
ID=5830999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54367D NL54367C (fr) | 1940-04-30 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE441216A (fr) |
| CH (1) | CH217878A (fr) |
| FR (1) | FR874688A (fr) |
| NL (1) | NL54367C (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422142A (en) * | 1945-05-26 | 1947-06-10 | Machlett Lab Inc | Cathode structure for electron discharge devices |
| JP2817451B2 (ja) * | 1991-06-25 | 1998-10-30 | 日本電気株式会社 | 電子管用カソード |
-
0
- BE BE441216D patent/BE441216A/xx unknown
- NL NL54367D patent/NL54367C/xx active
-
1941
- 1941-04-08 CH CH217878D patent/CH217878A/de unknown
- 1941-08-12 FR FR874688D patent/FR874688A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR874688A (fr) | 1942-08-18 |
| CH217878A (de) | 1941-11-15 |
| BE441216A (fr) |