FR855142A - Tube à cathode thermionique revêtue d'oxyde - Google Patents
Tube à cathode thermionique revêtue d'oxydeInfo
- Publication number
- FR855142A FR855142A FR855142DA FR855142A FR 855142 A FR855142 A FR 855142A FR 855142D A FR855142D A FR 855142DA FR 855142 A FR855142 A FR 855142A
- Authority
- FR
- France
- Prior art keywords
- cathode tube
- oxide coated
- thermionic cathode
- coated thermionic
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
- Adhesives Or Adhesive Processes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1611438A GB515371A (en) | 1938-05-30 | 1938-05-30 | Improvements in the manufacture of valves having oxide-coated thermionic cathodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR855142A true FR855142A (fr) | 1940-05-03 |
Family
ID=10071429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR855142D Expired FR855142A (fr) | 1938-05-30 | 1939-05-22 | Tube à cathode thermionique revêtue d'oxyde |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE434475A (fr) |
| FR (1) | FR855142A (fr) |
| GB (1) | GB515371A (fr) |
-
0
- BE BE434475D patent/BE434475A/xx unknown
-
1938
- 1938-05-30 GB GB1611438A patent/GB515371A/en not_active Expired
-
1939
- 1939-05-22 FR FR855142D patent/FR855142A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB515371A (en) | 1939-12-04 |
| BE434475A (fr) |
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