FR955571A - - Google Patents
Info
- Publication number
- FR955571A FR955571A FR955571DA FR955571A FR 955571 A FR955571 A FR 955571A FR 955571D A FR955571D A FR 955571DA FR 955571 A FR955571 A FR 955571A
- 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
- G03B21/54—Accessories
- G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR955571A true FR955571A (en) | 1950-01-17 |
Family
ID=1558274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR955571D Expired FR955571A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR955571A (en) |
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0
- FR FR955571D patent/FR955571A/fr not_active Expired