BE433432A - - Google Patents
Info
- Publication number
- BE433432A BE433432A BE433432DA BE433432A BE 433432 A BE433432 A BE 433432A BE 433432D A BE433432D A BE 433432DA BE 433432 A BE433432 A BE 433432A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- 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
- H01J1/32—Secondary-electron-emitting electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
- Cold Cathode And The Manufacture (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US197994A US2233276A (en) | 1938-03-25 | 1938-03-25 | Secondary electron emissive electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE433432A true BE433432A (en:Method) |
Family
ID=22731572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE433432D BE433432A (en:Method) | 1938-03-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2233276A (en:Method) |
| BE (1) | BE433432A (en:Method) |
| FR (1) | FR851749A (en:Method) |
| GB (1) | GB526731A (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL94756C (en:Method) * | 1952-05-01 | |||
| US3072816A (en) * | 1959-08-05 | 1963-01-08 | Landis & Gry A G | Electrode device and method of producing the same |
| US3756682A (en) * | 1967-02-13 | 1973-09-04 | Schlumberger Technology Corp | Method for outgassing permanent magnets |
-
0
- BE BE433432D patent/BE433432A/xx unknown
-
1938
- 1938-03-25 US US197994A patent/US2233276A/en not_active Expired - Lifetime
-
1939
- 1939-03-17 FR FR851749D patent/FR851749A/fr not_active Expired
- 1939-03-27 GB GB9469/39A patent/GB526731A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2233276A (en) | 1941-02-25 |
| GB526731A (en) | 1940-09-24 |
| FR851749A (fr) | 1940-01-13 |