FR31843E - Dispositifs photo-électriques - Google Patents
Dispositifs photo-électriquesInfo
- Publication number
- FR31843E FR31843E FR31843DA FR31843E FR 31843 E FR31843 E FR 31843E FR 31843D A FR31843D A FR 31843DA FR 31843 E FR31843 E FR 31843E
- Authority
- FR
- France
- Prior art keywords
- photoelectric devices
- photoelectric
- devices
- 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
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/04—Electrodes
- H01J40/06—Photo-emissive cathodes
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR31843T | 1926-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR31843E true FR31843E (fr) | 1927-06-13 |
Family
ID=8669617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR31843D Expired FR31843E (fr) | 1926-04-26 | 1926-04-26 | Dispositifs photo-électriques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR31843E (fr) |
-
1926
- 1926-04-26 FR FR31843D patent/FR31843E/fr not_active Expired
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