NL34413C - - Google Patents
Info
- Publication number
- NL34413C NL34413C NL34413DA NL34413C NL 34413 C NL34413 C NL 34413C NL 34413D A NL34413D A NL 34413DA NL 34413 C NL34413 C NL 34413C
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US441986A US2009839A (en) | 1930-04-05 | 1930-04-05 | Thermionic cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL34413C true NL34413C (de) |
Family
ID=23755087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL34413D NL34413C (de) | 1930-04-05 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2009839A (de) |
| GB (1) | GB375851A (de) |
| NL (1) | NL34413C (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2496374A (en) * | 1943-11-24 | 1950-02-07 | Boucher And Keiser Company | Tubular electric lamp |
| US2488727A (en) * | 1947-01-13 | 1949-11-22 | Gen Electric | Electrode for electric discharge devices |
| US2549355A (en) * | 1948-02-28 | 1951-04-17 | Gen Electric | Fluorescent lamp |
| US2699514A (en) * | 1951-11-28 | 1955-01-11 | Duro Test Corp | Fluorescent lamp |
| BE528714A (de) * | 1953-06-15 | |||
| US2871394A (en) * | 1955-11-28 | 1959-01-27 | Raytheon Mfg Co | Electron discharge devices and cathodes therefor |
| US4117374A (en) * | 1976-12-23 | 1978-09-26 | General Electric Company | Fluorescent lamp with opposing inversere cone electrodes |
-
0
- NL NL34413D patent/NL34413C/xx active
-
1930
- 1930-04-05 US US441986A patent/US2009839A/en not_active Expired - Lifetime
-
1931
- 1931-03-30 GB GB9652/31A patent/GB375851A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB375851A (en) | 1932-06-30 |
| US2009839A (en) | 1935-07-30 |