FR34644E - - Google Patents
Info
- Publication number
- FR34644E FR34644E FR34644DA FR34644E FR 34644 E FR34644 E FR 34644E FR 34644D A FR34644D A FR 34644DA FR 34644 E FR34644 E FR 34644E
- 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
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR34644E true FR34644E (xx) | 1929-09-19 |
Family
ID=1362535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR34644D Expired FR34644E (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR34644E (xx) |
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0
- FR FR34644D patent/FR34644E/fr not_active Expired