FR973104A - Differential device - Google Patents
Differential deviceInfo
- Publication number
- FR973104A FR973104A FR973104DA FR973104A FR 973104 A FR973104 A FR 973104A FR 973104D A FR973104D A FR 973104DA FR 973104 A FR973104 A FR 973104A
- Authority
- FR
- France
- Prior art keywords
- differential device
- differential
- 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
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/62—Holders for the original
- G03B27/6207—Holders for the original in copying cameras
- G03B27/6214—Copy boards
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR973104T | 1948-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR973104A true FR973104A (en) | 1951-02-07 |
Family
ID=9516470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR973104D Expired FR973104A (en) | 1948-10-08 | 1948-10-08 | Differential device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR973104A (en) |
-
1948
- 1948-10-08 FR FR973104D patent/FR973104A/en not_active Expired
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