BE440192A - - Google Patents
Info
- Publication number
- BE440192A BE440192A BE440192DA BE440192A BE 440192 A BE440192 A BE 440192A BE 440192D A BE440192D A BE 440192DA BE 440192 A BE440192 A BE 440192A
- 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
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
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- 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
- H01J1/142—Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU228317X | 1940-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE440192A true BE440192A (fr) |
Family
ID=10978375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE440192D BE440192A (fr) | 1940-02-21 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE440192A (fr) |
| CH (1) | CH228317A (fr) |
| FR (1) | FR869892A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09147735A (ja) * | 1995-09-21 | 1997-06-06 | Matsushita Electron Corp | 陰極線管用エミッタ材料及びその製造方法 |
| US5925976A (en) * | 1996-11-12 | 1999-07-20 | Matsushita Electronics Corporation | Cathode for electron tube having specific emissive material |
-
0
- BE BE440192D patent/BE440192A/xx unknown
-
1940
- 1940-12-16 CH CH228317D patent/CH228317A/de unknown
-
1941
- 1941-02-10 FR FR869892D patent/FR869892A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR869892A (fr) | 1942-02-23 |
| CH228317A (de) | 1943-08-15 |