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In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7032816 | Communication between machines and feed-forward control in event-based product manufacturing Providing communication between machines and feed-forward control in event-based product manufacturing. Some of the disclosed embodiments include a system, method, and computer-readable media for communicating data relating to a material between machines during a pr... | 04/25/2006 |
| 7023542 | Imaging method and apparatus The present invention relates to imaging apparatus and method for detecting optical properties of transparent media. The present invention superimposes, either optically or electronically, at least two images of the transparent media in order to obtain the optical p... | 04/04/2006 |
| 6976959 | Dual tonometer An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring ... | 12/20/2005 |
| 6868720 | Testing of pressure sensor in surgical cassette A method of determining the accuracy of a pressure sensor in a surgical cassette is disclosed. The method involves displacing a diaphragm of the sensor a pre-defined amount of displacement, and measuring the force exerted on the diaphragm by the displacing step. The... | 03/22/2005 |
| 6706001 | Dual tonometer pressure measurement device An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring ... | 03/16/2004 |
| 5708192 | Photosensor equipped device for detecting perforations A device for detecting perforations in film includes a camera body or other optical instrument body. A pressure plate is disposed at a rear of the body and has a channel that allows access of a sensor output to detect and read film position via the recogn... | 01/13/1998 |
| 4644787 | Marine instrument A marine speed sensor mounted in a housing which may also include a temperature sensor and a sonic transducer. The speed sensor includes a paddlewheel for producing an electromagnetic field. The paddlewheel is rotatably mounted adjacent the housing and ex... | 02/24/1987 |
| 4291384 | Tape gauge system System for dynamically testing the dimensional accuracy of punched tape. A microprocessor controller and modified capstan drive tape reader are utilized to provide large volume checking of punched tape. Dimensional requirements of the tape are tested dyna... | 09/22/1981 |
| 3952591 | Machine for cleaning and inspecting motion picture films A machine which is capable of cleaning and inspecting motion picture films with respect to splices, tears or breaks, sprocket hole elongation, or the like, includes a supporting frame, a rewind motor assembly and rewind reel, a take up motor assembly and ... | 04/27/1976 |
| 3935468 | Light responsive detector A film inspection apparatus is provided for detecting changes in surface profile of film, e.g., edge breaks sprocket hole tears, poor splices, etc. The film inspection apparatus includes a device mounted above a sapphire film support and having a pair of ... | 01/27/1976 |
