FR813267A - - Google Patents
Info
- Publication number
- FR813267A FR813267A FR813267DA FR813267A FR 813267 A FR813267 A FR 813267A FR 813267D A FR813267D A FR 813267DA FR 813267 A FR813267 A FR 813267A
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR813267A true FR813267A (h) | 1937-05-29 |
Family
ID=1553357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR813267D Expired FR813267A (h) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR813267A (h) |
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0
- FR FR813267D patent/FR813267A/fr not_active Expired