NL28874C - - Google Patents
Info
- Publication number
- NL28874C NL28874C NL28874DA NL28874C NL 28874 C NL28874 C NL 28874C NL 28874D A NL28874D A NL 28874DA NL 28874 C NL28874 C NL 28874C
- 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
- H01J1/18—Supports; Vibration-damping arrangements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL353905X | 1929-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28874C true NL28874C (xx) |
Family
ID=19785144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28874D NL28874C (xx) | 1929-09-25 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1980936A (xx) |
| BE (1) | BE372759A (xx) |
| FR (1) | FR700961A (xx) |
| GB (1) | GB353905A (xx) |
| NL (1) | NL28874C (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2728017A (en) * | 1942-05-06 | 1955-12-20 | Sylvania Electric Prod | Filament tensioning and supporting arrangements for electron tubes |
| FR1066747A (xx) * | 1951-11-23 | 1954-06-09 | ||
| NL182557B (nl) * | 1953-11-04 | Ngk Insulators Ltd | Dichtingspreparaat, alsmede werkwijze voor het dichten. | |
| US3745401A (en) * | 1972-02-15 | 1973-07-10 | Atomic Energy Commission | Filament support structure for large electron guns |
-
0
- NL NL28874D patent/NL28874C/xx active
- BE BE372759D patent/BE372759A/xx unknown
-
1930
- 1930-04-29 GB GB13191/30A patent/GB353905A/en not_active Expired
- 1930-08-08 US US473815A patent/US1980936A/en not_active Expired - Lifetime
- 1930-08-21 FR FR700961D patent/FR700961A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR700961A (fr) | 1931-03-10 |
| US1980936A (en) | 1934-11-13 |
| BE372759A (xx) | |
| GB353905A (en) | 1931-07-29 |