FR856449A - Electronic discharge devices - Google Patents
Electronic discharge devicesInfo
- Publication number
- FR856449A FR856449A FR856449DA FR856449A FR 856449 A FR856449 A FR 856449A FR 856449D A FR856449D A FR 856449DA FR 856449 A FR856449 A FR 856449A
- Authority
- FR
- France
- Prior art keywords
- discharge devices
- electronic discharge
- electronic
- devices
- discharge
- 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
- 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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1880038A GB516387A (en) | 1938-06-24 | 1938-06-24 | Improvements in or relating to electric discharge devices and cathodes therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
FR856449A true FR856449A (en) | 1940-06-13 |
Family
ID=10118636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR856449D Expired FR856449A (en) | 1938-06-24 | 1939-06-16 | Electronic discharge devices |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR856449A (en) |
GB (1) | GB516387A (en) |
-
1938
- 1938-06-24 GB GB1880038A patent/GB516387A/en not_active Expired
-
1939
- 1939-06-16 FR FR856449D patent/FR856449A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB516387A (en) | 1940-01-01 |
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