FR1268752A - écran de projection - Google Patents
écran de projectionInfo
- Publication number
- FR1268752A FR1268752A FR838640A FR838640A FR1268752A FR 1268752 A FR1268752 A FR 1268752A FR 838640 A FR838640 A FR 838640A FR 838640 A FR838640 A FR 838640A FR 1268752 A FR1268752 A FR 1268752A
- 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
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR838640A FR1268752A (fr) | 1960-09-15 | 1960-09-15 | écran de projection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR838640A FR1268752A (fr) | 1960-09-15 | 1960-09-15 | écran de projection |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1268752A true FR1268752A (fr) | 1961-08-04 |
Family
ID=8739066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR838640A Expired FR1268752A (fr) | 1960-09-15 | 1960-09-15 | écran de projection |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1268752A (fr) |
-
1960
- 1960-09-15 FR FR838640A patent/FR1268752A/fr not_active Expired
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