FR819954A - Improvements to screens for cinematography, etc. - Google Patents
Improvements to screens for cinematography, etc.Info
- Publication number
- FR819954A FR819954A FR819954DA FR819954A FR 819954 A FR819954 A FR 819954A FR 819954D A FR819954D A FR 819954DA FR 819954 A FR819954 A FR 819954A
- Authority
- FR
- France
- Prior art keywords
- cinematography
- screens
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/606—Projection screens characterised by the nature of the surface for relief projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR819954T | 1937-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR819954A true FR819954A (en) | 1937-10-29 |
Family
ID=9269662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR819954D Expired FR819954A (en) | 1937-03-30 | 1937-03-30 | Improvements to screens for cinematography, etc. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR819954A (en) |
-
1937
- 1937-03-30 FR FR819954D patent/FR819954A/en not_active Expired
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