FR446870A - Electric projection lamp - Google Patents
Electric projection lampInfo
- Publication number
- FR446870A FR446870A FR446870A FR446870DA FR446870A FR 446870 A FR446870 A FR 446870A FR 446870 A FR446870 A FR 446870A FR 446870D A FR446870D A FR 446870DA FR 446870 A FR446870 A FR 446870A
- Authority
- FR
- France
- Prior art keywords
- projection lamp
- electric projection
- electric
- lamp
- projection
- 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
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
- H01K1/325—Reflecting coating
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR191220659X | 1911-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR446870A true FR446870A (en) | 1912-12-17 |
Family
ID=32339787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR446870A Expired FR446870A (en) | 1911-10-12 | 1911-10-12 | Electric projection lamp |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR446870A (en) |
GB (1) | GB191220659A (en) |
-
1911
- 1911-10-12 FR FR446870A patent/FR446870A/en not_active Expired
-
1912
- 1912-09-10 GB GB191220659D patent/GB191220659A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB191220659A (en) |
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