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| All Patents in class 396/504 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,282,291 | May 05, 1942 | V.E. Whitman | Photographic Camera with Shutter Control Means | camera shutters | |
| 2,339,657 | Jan. 18, 1944 | B.L. Smith | Photographic Identification Equipment Unit | photographic studio apparatus | |