FR720985A - Incandescent electric lamp with gaseous atmosphere - Google Patents
Incandescent electric lamp with gaseous atmosphereInfo
- Publication number
- FR720985A FR720985A FR720985DA FR720985A FR 720985 A FR720985 A FR 720985A FR 720985D A FR720985D A FR 720985DA FR 720985 A FR720985 A FR 720985A
- Authority
- FR
- France
- Prior art keywords
- electric lamp
- gaseous atmosphere
- incandescent electric
- incandescent
- gaseous
- Prior art date
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT359749X | 1930-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR720985A true FR720985A (en) | 1932-02-26 |
Family
ID=3672723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR720985D Expired FR720985A (en) | 1930-08-08 | 1931-08-03 | Incandescent electric lamp with gaseous atmosphere |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE381382A (en) |
FR (1) | FR720985A (en) |
GB (1) | GB359749A (en) |
HU (1) | HU103551A (en) |
NL (1) | NL32014C (en) |
-
0
- NL NL32014D patent/NL32014C/xx active
- HU HU103551D patent/HU103551A/hu unknown
- BE BE381382D patent/BE381382A/xx unknown
-
1930
- 1930-11-10 GB GB33797/30A patent/GB359749A/en not_active Expired
-
1931
- 1931-08-03 FR FR720985D patent/FR720985A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE381382A (en) | |
NL32014C (en) | |
HU103551A (en) | |
GB359749A (en) | 1931-10-29 |
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