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| All Patents in class 396/144 | |||||
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| Number | Date | Patentee | Title | Type | |
| 658,994 | Oct. 02, 1900 | J.A. Mosher | Focusing Device for Cameras | focusing attachments | |
| 2,860,560 | Nov. 18, 1958 | L. Arnesen, L.M. Traino | Focusing Mechanism for Photographic Cameras | camera range finders | |