BE525821A - - Google Patents
Info
- Publication number
- BE525821A BE525821A BE525821DA BE525821A BE 525821 A BE525821 A BE 525821A BE 525821D A BE525821D A BE 525821DA BE 525821 A BE525821 A BE 525821A
- Authority
- BE
- Belgium
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
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US331874A US2848644A (en) | 1953-01-19 | 1953-01-19 | Thermionic cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE525821A true BE525821A (de) |
Family
ID=23295749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE525821D BE525821A (de) | 1953-01-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2848644A (de) |
| BE (1) | BE525821A (de) |
| CH (1) | CH316951A (de) |
| DE (1) | DE1026000B (de) |
| FR (1) | FR1098578A (de) |
| GB (1) | GB739232A (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965793A (en) * | 1959-05-12 | 1960-12-20 | Westinghouse Electric Corp | Electron device |
| US3525135A (en) * | 1964-04-16 | 1970-08-25 | Gen Electric | Thermionic cathode |
| US3434812A (en) * | 1964-04-16 | 1969-03-25 | Gen Electric | Thermionic cathode |
| DE1234861B (de) * | 1965-07-05 | 1967-02-23 | Siemens Ag | Vorratskathode fuer elektrische Entladungsgefaesse |
| US3514661A (en) * | 1968-07-05 | 1970-05-26 | Spectra Mat Inc | Directly heated dispenser cathode structure and the method of fabricating same |
| US4273683A (en) * | 1977-12-16 | 1981-06-16 | Hitachi, Ltd. | Oxide cathode and process for production thereof |
| JPS5488059A (en) * | 1977-12-26 | 1979-07-12 | Hitachi Ltd | Thermion emission cathode |
| JPS5566819A (en) * | 1978-11-15 | 1980-05-20 | Hitachi Ltd | Oxide cathode for electron tube |
| US4308178A (en) * | 1979-09-17 | 1981-12-29 | North American Philips Consumer Electronics Corp. | Thermionic cathode emitter coating |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE628460C (de) * | 1928-04-29 | 1936-04-15 | Loewe Opta Gmbh | Hochemissionskathode |
| US1922244A (en) * | 1930-09-13 | 1933-08-15 | Fansteel Prod Co Inc | Electrode and method of making the same |
| US2175345A (en) * | 1935-07-12 | 1939-10-10 | Gen Electric | Electric gaseous discharge device |
| US2147447A (en) * | 1936-09-21 | 1939-02-14 | Siemens Ag | Glow cathode |
| US2501089A (en) * | 1945-11-29 | 1950-03-21 | Martin A Pomerantz | Thermionic electron emitter |
| GB629126A (en) * | 1947-04-14 | 1949-09-13 | British Thomson Houston Co Ltd | Improvements in and relating to cathodes for electric discharge devices |
| BE486002A (de) * | 1947-11-26 | |||
| US2524001A (en) * | 1948-05-19 | 1950-09-26 | Raytheon Mfg Co | Compressed cathode support structure |
| US2624024A (en) * | 1949-10-26 | 1952-12-30 | Hartford Nat Bank & Trust Co | Cathode for use in electron discharge tubes |
| US2647216A (en) * | 1950-04-01 | 1953-07-28 | Rca Corp | Dispenser cathode |
| NL91132C (de) * | 1951-11-29 | |||
| BE515833A (de) * | 1951-11-29 | |||
| BE526506A (de) * | 1953-02-16 |
-
0
- BE BE525821D patent/BE525821A/xx unknown
-
1953
- 1953-01-19 US US331874A patent/US2848644A/en not_active Expired - Lifetime
-
1954
- 1954-01-15 GB GB1262/54A patent/GB739232A/en not_active Expired
- 1954-01-16 DE DEN8315A patent/DE1026000B/de active Pending
- 1954-01-18 CH CH316951D patent/CH316951A/de unknown
- 1954-01-18 FR FR1098578D patent/FR1098578A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1098578A (fr) | 1955-08-08 |
| GB739232A (en) | 1955-10-26 |
| DE1026000B (de) | 1958-03-13 |
| CH316951A (de) | 1956-10-31 |
| US2848644A (en) | 1958-08-19 |