FR512878A - Gas-filled incandescent electric lamp - Google Patents
Gas-filled incandescent electric lampInfo
- Publication number
- FR512878A FR512878A FR512878DA FR512878A FR 512878 A FR512878 A FR 512878A FR 512878D A FR512878D A FR 512878DA FR 512878 A FR512878 A FR 512878A
- Authority
- FR
- France
- Prior art keywords
- gas
- electric lamp
- incandescent electric
- filled incandescent
- filled
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/58—Cooling arrangements
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE333357T | 1913-12-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR512878A true FR512878A (en) | 1921-02-02 |
Family
ID=38123970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR512878D Expired FR512878A (en) | 1913-12-31 | 1920-04-01 | Gas-filled incandescent electric lamp |
Country Status (3)
Country | Link |
---|---|
DE (2) | DE333357C (en) |
FR (1) | FR512878A (en) |
NL (1) | NL4105C (en) |
-
1913
- 1913-12-31 DE DE1913333357D patent/DE333357C/en not_active Expired
-
1914
- 1914-03-05 DE DES41576D patent/DE357686C/en not_active Expired
- 1914-09-10 NL NL5214A patent/NL4105C/en active
-
1920
- 1920-04-01 FR FR512878D patent/FR512878A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL4105C (en) | 1914-09-10 |
DE357686C (en) | 1922-08-29 |
DE333357C (en) | 1921-02-22 |
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