BE429592A - - Google Patents
Info
- Publication number
- BE429592A BE429592A BE429592DA BE429592A BE 429592 A BE429592 A BE 429592A BE 429592D A BE429592D A BE 429592DA BE 429592 A BE429592 A BE 429592A
- 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
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- 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)
- Spark Plugs (AREA)
- Discharge Lamp (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL208243X | 1937-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE429592A true BE429592A (fr) |
Family
ID=19778672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE429592D BE429592A (fr) | 1937-08-09 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE429592A (fr) |
| CH (1) | CH208243A (fr) |
| DE (1) | DE737996C (fr) |
| FR (1) | FR841828A (fr) |
| GB (1) | GB517743A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2526574A (en) * | 1947-06-14 | 1950-10-17 | Bell Telephone Labor Inc | Secondary emitter |
-
0
- BE BE429592D patent/BE429592A/xx unknown
-
1938
- 1938-08-06 GB GB23310/38A patent/GB517743A/en not_active Expired
- 1938-08-07 DE DEN42308D patent/DE737996C/de not_active Expired
- 1938-08-08 FR FR841828D patent/FR841828A/fr not_active Expired
- 1938-08-08 CH CH208243D patent/CH208243A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR841828A (fr) | 1939-05-31 |
| DE737996C (de) | 1943-08-02 |
| GB517743A (en) | 1940-02-07 |
| CH208243A (de) | 1940-01-15 |