FR743141A - - Google Patents
Info
- Publication number
- FR743141A FR743141A FR743141DA FR743141A FR 743141 A FR743141 A FR 743141A FR 743141D A FR743141D A FR 743141DA FR 743141 A FR743141 A FR 743141A
- 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
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/34—Means for automatic focusing therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743141A true FR743141A (zh) | 1933-03-23 |
Family
ID=1547441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743141D Expired FR743141A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743141A (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130632A (en) * | 1960-12-07 | 1964-04-28 | Russell W Borrowdale | Camera adjustment |
-
0
- FR FR743141D patent/FR743141A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3130632A (en) * | 1960-12-07 | 1964-04-28 | Russell W Borrowdale | Camera adjustment |