FR719069A - Cathode à grande émission - Google Patents
Cathode à grande émissionInfo
- Publication number
- FR719069A FR719069A FR719069DA FR719069A FR 719069 A FR719069 A FR 719069A FR 719069D A FR719069D A FR 719069DA FR 719069 A FR719069 A FR 719069A
- Authority
- FR
- France
- Prior art keywords
- high emission
- emission cathode
- cathode
- emission
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE380835X | 1930-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR719069A true FR719069A (fr) | 1932-02-01 |
Family
ID=6349618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR719069D Expired FR719069A (fr) | 1930-06-25 | 1931-06-24 | Cathode à grande émission |
Country Status (4)
Country | Link |
---|---|
US (1) | US1893935A (fr) |
BE (1) | BE380781A (fr) |
FR (1) | FR719069A (fr) |
GB (1) | GB380835A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2861014A (en) * | 1956-08-14 | 1958-11-18 | Gen Lab Associates Inc | Process of making a semi-conductive ceramic body |
-
0
- BE BE380781D patent/BE380781A/xx unknown
-
1931
- 1931-06-22 US US545998A patent/US1893935A/en not_active Expired - Lifetime
- 1931-06-24 FR FR719069D patent/FR719069A/fr not_active Expired
- 1931-06-24 GB GB18234/31A patent/GB380835A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB380835A (en) | 1932-09-26 |
BE380781A (fr) | |
US1893935A (en) | 1933-01-10 |
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