FR49587E - - Google Patents
Info
- Publication number
- FR49587E FR49587E FR49587DA FR49587E FR 49587 E FR49587 E FR 49587E FR 49587D A FR49587D A FR 49587DA FR 49587 E FR49587 E FR 49587E
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR49587E true FR49587E (xx) | 1939-05-11 |
Family
ID=1363229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR49587D Expired FR49587E (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR49587E (xx) |
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0
- FR FR49587D patent/FR49587E/fr not_active Expired