FR877121A - Projection device - Google Patents
Projection deviceInfo
- Publication number
- FR877121A FR877121A FR877121DA FR877121A FR 877121 A FR877121 A FR 877121A FR 877121D A FR877121D A FR 877121DA FR 877121 A FR877121 A FR 877121A
- Authority
- FR
- France
- Prior art keywords
- projection device
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR877121T | 1941-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR877121A true FR877121A (en) | 1942-11-27 |
Family
ID=9360879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR877121D Expired FR877121A (en) | 1941-11-21 | 1941-11-21 | Projection device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR877121A (en) |
-
1941
- 1941-11-21 FR FR877121D patent/FR877121A/en not_active Expired
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