BE440557A - - Google Patents
Info
- Publication number
- BE440557A BE440557A BE440557DA BE440557A BE 440557 A BE440557 A BE 440557A BE 440557D A BE440557D A BE 440557DA BE 440557 A BE440557 A BE 440557A
- 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
- H01J1/32—Secondary-electron-emitting electrodes
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- 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
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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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE869470X | 1940-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE440557A true BE440557A (en:Method) |
Family
ID=6802940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE440557D BE440557A (en:Method) | 1940-02-16 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE440557A (en:Method) |
| FR (1) | FR869470A (en:Method) |
-
0
- BE BE440557D patent/BE440557A/xx unknown
-
1941
- 1941-01-23 FR FR869470D patent/FR869470A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR869470A (fr) | 1942-02-03 |