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| All Patents in class 396/145 | |||||
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| Number | Date | Patentee | Title | Type | |
| 911,001 | Jan. 26, 1909 | W.F. Folmer | Focusing Attachment for Cameras | focusing attachments | |
| 923,827 | Jun. 08, 1909 | W.F. Folmer | Camera | cameras | |
| 932,458 | Aug. 31, 1909 | W.F. Folmer | Focusing Device | focusing attachments | |
| 2,499,691 | Mar. 07, 1950 | J.A. Sprague | Selectively-Active Infinity Stop for Cameras | camera accessories | |
| 2,933,996 | Apr. 26, 1960 | R.L. Dalton | Lock for Focusing Mechanism of Camera | focusing attachments | |