FR741836A - - Google Patents
Info
- Publication number
- FR741836A FR741836A FR741836DA FR741836A FR 741836 A FR741836 A FR 741836A FR 741836D A FR741836D A FR 741836DA FR 741836 A FR741836 A FR 741836A
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE404341X | 1931-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741836A true FR741836A (zh) | 1933-02-21 |
Family
ID=6421775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741836D Expired FR741836A (zh) | 1931-07-13 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR741836A (zh) |
| GB (1) | GB404341A (zh) |
| NL (1) | NL36756C (zh) |
-
0
- NL NL36756D patent/NL36756C/xx active
- FR FR741836D patent/FR741836A/fr not_active Expired
-
1932
- 1932-07-13 GB GB19847/32A patent/GB404341A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB404341A (en) | 1934-01-15 |
| NL36756C (zh) |