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| Number | Title | Issue Date |
| 3994574 | Wide-angle photographic lens system A compact wide-angle photographic lens system for which the total focal length of the front lens group is made a negative value and for which low-dispersion glass is used for the positive first lens component and high-dispersion glass is used for the nega... | 11/30/1976 |
| 3958866 | Copying objective lens system A large-aperture, compact, light-weight copying objective lens system comprising seven lenses arranged symmetrically on both sides of a stop positioned at the center of said lens system and satisfying the following conditions:... | 05/25/1976 |
| 3948584 | High speed lens having short back focus and compact rear member A high speed lens of the type sometimes called a quasitelephoto lens, having a very short and compactly constructed rear member, and having a relative aperture in the range of about f/2 to f/1.4. The lens is intended particularly for installation in a 35 ... | 04/06/1976 |
| 3942875 | Wide aperture long focal length lens A wide aperture long focus photographic lens having internal aberration compensation and comprising an objective which is movable for focusing and a rear lens which is stationary with respect to the film plane and has an equivalent focal length which is s... | 03/09/1976 |
