BE457909A - - Google Patents
Info
- Publication number
- BE457909A BE457909A BE457909DA BE457909A BE 457909 A BE457909 A BE 457909A BE 457909D A BE457909D A BE 457909DA BE 457909 A BE457909 A BE 457909A
- 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
- H01J1/14—Solid thermionic cathodes characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2463727X | 1944-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE457909A true BE457909A (da) |
Family
ID=3895830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE457909D BE457909A (da) | 1944-12-12 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2463727A (da) |
| BE (1) | BE457909A (da) |
| FR (1) | FR939440A (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL293770A (da) * | 1962-06-08 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1720675A (en) * | 1924-02-18 | 1929-07-16 | Philips Nv | Manufacture of oxide cathodes |
| US1961122A (en) * | 1928-08-22 | 1934-05-29 | Westinghouse Electric & Mfg Co | Thermionic cathode |
| US2209708A (en) * | 1939-10-31 | 1940-07-30 | Rca Corp | Cathode manufacture |
| US2317754A (en) * | 1940-07-31 | 1943-04-27 | Gorlich Paul | Method of producing secondary electron emitting cathodes |
-
0
- BE BE457909D patent/BE457909A/xx unknown
-
1946
- 1946-12-13 FR FR939440D patent/FR939440A/fr not_active Expired
-
1947
- 1947-02-26 US US731142A patent/US2463727A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2463727A (en) | 1949-03-08 |
| FR939440A (fr) | 1948-11-15 |