FR632704A - - Google Patents
Info
- Publication number
- FR632704A FR632704A FR632704DA FR632704A FR 632704 A FR632704 A FR 632704A FR 632704D A FR632704D A FR 632704DA FR 632704 A FR632704 A FR 632704A
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR632704A true FR632704A (it) | 1928-01-14 |
Family
ID=1541773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR632704D Expired FR632704A (it) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR632704A (it) |
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0
- FR FR632704D patent/FR632704A/fr not_active Expired