FR1015773A - Optical projection or magnifying device - Google Patents
Optical projection or magnifying deviceInfo
- Publication number
- FR1015773A FR1015773A FR1015773DA FR1015773A FR 1015773 A FR1015773 A FR 1015773A FR 1015773D A FR1015773D A FR 1015773DA FR 1015773 A FR1015773 A FR 1015773A
- Authority
- FR
- France
- Prior art keywords
- optical projection
- magnifying device
- magnifying
- projection
- optical
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1015773T | 1950-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1015773A true FR1015773A (en) | 1952-10-23 |
Family
ID=9573232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1015773D Expired FR1015773A (en) | 1950-03-31 | 1950-03-31 | Optical projection or magnifying device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1015773A (en) |
-
1950
- 1950-03-31 FR FR1015773D patent/FR1015773A/en not_active Expired
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