FR738431A - - Google Patents
Info
- Publication number
- FR738431A FR738431A FR738431DA FR738431A FR 738431 A FR738431 A FR 738431A FR 738431D A FR738431D A FR 738431DA FR 738431 A FR738431 A FR 738431A
- 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
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/08—Tubes with a single discharge path having electrostatic control means only with movable electrode or electrodes
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR738431A true FR738431A (en) | 1932-12-24 |
Family
ID=1545338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR738431D Expired FR738431A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR738431A (en) |
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0
- FR FR738431D patent/FR738431A/fr not_active Expired