FR28000E - - Google Patents
Info
- Publication number
- FR28000E FR28000E FR28000DA FR28000E FR 28000 E FR28000 E FR 28000E FR 28000D A FR28000D A FR 28000DA FR 28000 E FR28000 E FR 28000E
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR28000E true FR28000E (id) | 1924-11-11 |
Family
ID=1362179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR28000D Expired FR28000E (id) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR28000E (id) |
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0
- FR FR28000D patent/FR28000E/fr not_active Expired