FR778559A - - Google Patents
Info
- Publication number
- FR778559A FR778559A FR778559DA FR778559A FR 778559 A FR778559 A FR 778559A FR 778559D A FR778559D A FR 778559DA FR 778559 A FR778559 A FR 778559A
- Authority
- FR
- France
- 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
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR778559A true FR778559A (de) | 1935-03-15 |
Family
ID=1552293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR778559D Expired FR778559A (de) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR778559A (de) |
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0
- FR FR778559D patent/FR778559A/fr not_active Expired