BE427303A - - Google Patents
Info
- Publication number
- BE427303A BE427303A BE427303DA BE427303A BE 427303 A BE427303 A BE 427303A BE 427303D A BE427303D A BE 427303DA BE 427303 A BE427303 A BE 427303A
- 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
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cold Cathode And The Manufacture (AREA)
- Discharge Lamp (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL207265X | 1937-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE427303A true BE427303A (en:Method) |
Family
ID=19778619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE427303D BE427303A (en:Method) | 1937-04-02 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2190695A (en:Method) |
| BE (1) | BE427303A (en:Method) |
| CH (1) | CH207265A (en:Method) |
| FR (1) | FR836016A (en:Method) |
| GB (1) | GB492025A (en:Method) |
| NL (1) | NL50264C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2637002A (en) * | 1953-04-28 | Television pickup tube | ||
| BE446289A (en:Method) * | 1941-07-03 | |||
| US2530167A (en) * | 1944-12-14 | 1950-11-14 | Hartford Nat Bank & Trust Co | Discharge tube |
| GB1200899A (en) * | 1967-04-21 | 1970-08-05 | Mullard Ltd | Improvements in or relating to photocathodes |
-
0
- BE BE427303D patent/BE427303A/xx unknown
- NL NL50264D patent/NL50264C/xx active
-
1938
- 1938-03-15 US US195941A patent/US2190695A/en not_active Expired - Lifetime
- 1938-03-30 GB GB9752/38A patent/GB492025A/en not_active Expired
- 1938-03-31 CH CH207265D patent/CH207265A/de unknown
- 1938-04-01 FR FR836016D patent/FR836016A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR836016A (fr) | 1939-01-09 |
| NL50264C (en:Method) | |
| US2190695A (en) | 1940-02-20 |
| GB492025A (en) | 1938-09-13 |
| CH207265A (de) | 1939-10-15 |