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| All Patents in class 396/401 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,383,395 | Jul. 05, 1921 | W.F. Folmer | Photographic Exposing Apparatus | cameras | |
| 2,339,657 | Jan. 18, 1944 | B.L. Smith | Photographic Identification Equipment Unit | photographic studio apparatus | |
| 3,039,441 | Jun. 19, 1962 | A.F. Hurlburt, J.G. Padelt | Photographic Camera | cameras | |