FR531563A - - Google Patents
Info
- Publication number
- FR531563A FR531563A FR531563DA FR531563A FR 531563 A FR531563 A FR 531563A FR 531563D A FR531563D A FR 531563DA FR 531563 A FR531563 A FR 531563A
- 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
- G03B21/32—Details specially adapted for motion-picture projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR531563A true FR531563A (pm) | 1922-01-17 |
Family
ID=1537007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR531563D Expired FR531563A (pm) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR531563A (pm) |
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0
- FR FR531563D patent/FR531563A/fr not_active Expired