NL18221C - - Google Patents
Info
- Publication number
- NL18221C NL18221C NL18221DA NL18221C NL 18221 C NL18221 C NL 18221C NL 18221D A NL18221D A NL 18221DA NL 18221 C NL18221 C NL 18221C
- 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 |
|---|---|---|---|
| NL254733X | 1925-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL18221C true NL18221C (en:Method) |
Family
ID=19781250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL18221D NL18221C (en:Method) | 1925-07-02 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1819146A (en:Method) |
| FR (1) | FR629787A (en:Method) |
| GB (1) | GB254733A (en:Method) |
| NL (1) | NL18221C (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2443237A (en) * | 1941-05-23 | 1948-06-15 | Patelhold Patentverwertung | Transmitting tube |
| US2659023A (en) * | 1951-06-21 | 1953-11-10 | Machlett Lab Inc | Filament structure |
| US3461337A (en) * | 1964-08-15 | 1969-08-12 | Nippon Electric Co | Electron discharge device filament structure |
| US3517249A (en) * | 1966-12-29 | 1970-06-23 | Nippon Electric Co | Cage-like filament structure for electron discharge |
| US3594604A (en) * | 1968-05-17 | 1971-07-20 | Itt | High-power electron tube having two longitudinally displaced cathode sections |
-
0
- NL NL18221D patent/NL18221C/xx active
-
1926
- 1926-06-28 FR FR629787D patent/FR629787A/fr not_active Expired
- 1926-06-28 US US119093A patent/US1819146A/en not_active Expired - Lifetime
- 1926-07-01 GB GB16582/26A patent/GB254733A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1819146A (en) | 1931-08-18 |
| FR629787A (fr) | 1927-11-17 |
| GB254733A (en) | 1927-01-06 |