BE470922A - - Google Patents
Info
- Publication number
- BE470922A BE470922A BE470922DA BE470922A BE 470922 A BE470922 A BE 470922A BE 470922D A BE470922D A BE 470922DA BE 470922 A BE470922 A BE 470922A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/36—Tubes with flat electrodes, e.g. disc electrode
-
- 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 |
|---|---|---|---|
| US520383A US2421039A (en) | 1944-01-31 | 1944-01-31 | Cathode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470922A true BE470922A (US07608600-20091027-C00054.png) |
Family
ID=24072365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470922D BE470922A (US07608600-20091027-C00054.png) | 1944-01-31 |
Country Status (5)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899591A (en) * | 1959-08-11 | Electrical heating device | ||
| US2500355A (en) * | 1944-11-14 | 1950-03-14 | Sylvania Electric Prod | Electron discharge tube |
| US2436907A (en) * | 1945-06-23 | 1948-03-02 | Nasa | Indirectly heated cathode |
| BE475720A (US07608600-20091027-C00054.png) * | 1946-08-30 | |||
| GB820065A (en) * | 1954-10-22 | 1959-09-16 | Gen Electric | Improvements relating to cathode structures for electric discharge devices |
| DE1143589B (de) * | 1959-12-22 | 1963-02-14 | Edgerton Germeshausen And Grie | Verfahren zur Herstellung eines Heizers fuer Kathoden von elektrischen Entladungsroehren |
| US3558965A (en) * | 1967-10-02 | 1971-01-26 | Nat Video Corp | Cathode for television tube and method of making |
| US4296311A (en) * | 1979-08-15 | 1981-10-20 | The Kanthal Corporation | Electric hot plate |
| GB2192751B (en) * | 1986-07-14 | 1991-02-13 | Denki Kagaku Kogyo Kk | Method of making a thermionic cathode structure. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1102249A (en) * | 1911-10-31 | 1914-07-07 | Cutler Hammer Mfg Co | Electric resistance unit. |
| US1539497A (en) * | 1922-03-27 | 1925-05-26 | W B Mcallister Company | Electrical heating device |
| US1866195A (en) * | 1929-06-01 | 1932-07-05 | Ile De France | Radio valves employing gallium |
| FR700923A (fr) * | 1929-11-13 | 1931-03-09 | Telefunken Gmbh | Tube à cathode chauffée et électrode de commande |
| US2051637A (en) * | 1934-12-07 | 1936-08-18 | Electric Trading Corp | Electrical heating device |
| US2300891A (en) * | 1941-04-25 | 1942-11-03 | Hankscraft Co | Liquid conductor heater |
| US2357905A (en) * | 1942-01-26 | 1944-09-12 | Mcgraw Electric Co | Automatic sadiron |
| BE478852A (US07608600-20091027-C00054.png) * | 1942-06-26 |
-
0
- BE BE470922D patent/BE470922A/xx unknown
-
1944
- 1944-01-31 US US520383A patent/US2421039A/en not_active Expired - Lifetime
-
1945
- 1945-01-26 GB GB2090/45A patent/GB590520A/en not_active Expired
- 1945-11-08 CH CH259587D patent/CH259587A/de unknown
-
1946
- 1946-01-12 FR FR928312D patent/FR928312A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB590520A (en) | 1947-07-21 |
| CH259587A (de) | 1949-01-31 |
| FR928312A (fr) | 1947-11-25 |
| US2421039A (en) | 1947-05-27 |
