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| Patents for William S. Kals | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,371,524 | Mar. 13, 1945 | W.S. Kals | Operating Device for Cameras | camera accessories | |
| 2,397,742 | Apr. 02, 1946 | W.S. Kals | Automatic Operation of Diaphragms and Shutters of Portrait Cameras | camera accessories | |