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| Patents for G03B 13 - Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras (11,611) |
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| 04/27/1976 | US3953728 Apparatus for determining the relative position of the plane of maximum amplitude of the local frequency component | | 04/20/1976 | US3952321 Optical system for effecting indication within a finder in a single lens reflex camera | | 03/16/1976 | US3945023 Auto-focus camera with solid state range finder | | 03/09/1976 | US3943533 Locking mechanism for interchangeable pentaprism view finder in single lens reflex camera | | 03/02/1976 | US3941996 Automatic focus apparatus | | 02/24/1976 | US3940779 Interchangeable finder type camera | | 02/17/1976 | US3938894 Focus detecting device | | 02/10/1976 | US3937950 Focus defecting system | | 01/13/1976 | US3932733 Automatic focusing of an optical system | | 01/06/1976 | US3931630 Viewfinder assembly | | 02/03/1975 | US3936849 Device for detecting focussing in optical instruments |
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