Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 6927797 | Viewfinder for high definition video camera A viewfinder for mounting on a camera having a video signal tap, such as a professional video camera, to extend forwardly and laterally of the camera. A pivotable member is connected to a support base for selectively pivoting about a laterally extending axis and bei... | 08/09/2005 |
| 6754008 | Imaging lens arrangement designed for low light conditions Disclosed is an improved lens system for low light applications. This improved low light lens system is designed for any suitable low light application, such as the above described biological imaging application. In one embodiment, a finite conjugate lens system is ... | 06/22/2004 |
| 5027144 | Lens changer for cameras Described herein is a lens changer for camera, which is provided with a unitary lens body integrally and contiguously formed with a main lens portion and at least one replacement lens portion of a different type in optical characteristics from the main le... | 06/25/1991 |
| 4433907 | Lens alignment structure An adjustable lens mounting device is provided in a photographic enlarger apparatus for adjusting the pitch and roll of the lens stage to achieve optimum alignment of a lens element therein. Pitch adjustment is provided by a pair of elements having comple... | 02/28/1984 |
| 4420231 | Motion picture camera Motion picture camera apparatus uses a 35 mm prime lens assembly for a 16 mm motion picture camera. Between the prime lens assembly and the motion picture camera there is positioned a pair of fixed parallel mirrors mounted at an angle to the axis of the p... | 12/13/1983 |
