FR869713A - - Google Patents
Info
- Publication number
- FR869713A FR869713A FR869713DA FR869713A FR 869713 A FR869713 A FR 869713A FR 869713D A FR869713D A FR 869713DA FR 869713 A FR869713 A FR 869713A
- 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
- H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
- H01J21/12—Tubes with variable amplification factor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0032—Tubes with variable amplification factor
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR869713A true FR869713A (xx) | 1942-02-13 |
Family
ID=1555534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR869713D Expired FR869713A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR869713A (xx) |
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0
- FR FR869713D patent/FR869713A/fr not_active Expired