NL42371C - - Google Patents
Info
- Publication number
- NL42371C NL42371C NL74625A NL74625A NL42371C NL 42371 C NL42371 C NL 42371C NL 74625 A NL74625 A NL 74625A NL 74625 A NL74625 A NL 74625A NL 42371 C NL42371 C NL 42371C
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US742707A US2081415A (en) | 1934-09-05 | 1934-09-05 | Electron emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL42371C true NL42371C (pt) | 1938-01-15 |
Family
ID=24985887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL74625A NL42371C (pt) | 1934-09-05 | 1935-08-23 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2081415A (pt) |
| FR (1) | FR795640A (pt) |
| GB (1) | GB440094A (pt) |
| NL (1) | NL42371C (pt) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742717C (de) * | 1937-09-02 | 1943-12-09 | Telefunken Gmbh | Roehrensockel mit am Umfang verteilten Elektrodenanschluessen |
| US2817784A (en) * | 1951-01-31 | 1957-12-24 | Siemens Ag | Cathode for use in electrical discharge devices |
| NL84125C (pt) * | 1951-10-13 | |||
| US2872611A (en) * | 1953-11-16 | 1959-02-03 | Sylvania Electric Prod | Cathode |
| US2857543A (en) * | 1956-06-06 | 1958-10-21 | Walter H Kohl | Cathode structure for indirectly heated narrow elongated emitting surfaces |
| US3201636A (en) * | 1963-09-09 | 1965-08-17 | Rca Corp | High voltage electron discharge tube |
-
1934
- 1934-09-05 US US742707A patent/US2081415A/en not_active Expired - Lifetime
-
1935
- 1935-07-27 GB GB21386/35A patent/GB440094A/en not_active Expired
- 1935-08-06 FR FR795640D patent/FR795640A/fr not_active Expired
- 1935-08-23 NL NL74625A patent/NL42371C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2081415A (en) | 1937-05-25 |
| FR795640A (fr) | 1936-03-18 |
| GB440094A (en) | 1935-12-19 |