FR746022A - Ecran de projection - Google Patents
Ecran de projectionInfo
- Publication number
- FR746022A FR746022A FR746022DA FR746022A FR 746022 A FR746022 A FR 746022A FR 746022D A FR746022D A FR 746022DA FR 746022 A FR746022 A FR 746022A
- Authority
- FR
- France
- Prior art keywords
- projection screen
- projection
- screen
- 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
- G03B21/602—Lenticular screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR746022T | 1932-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR746022A true FR746022A (fr) | 1933-05-20 |
Family
ID=9147115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR746022D Expired FR746022A (fr) | 1932-02-08 | 1932-02-08 | Ecran de projection |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR746022A (fr) |
-
1932
- 1932-02-08 FR FR746022D patent/FR746022A/fr not_active Expired
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