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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 |
| 6823969 | Braking device for an elevator A braking device acts on a guide rail and consists of a housing that is arranged at an elevator car yoke and serves as a support for spring packets and/or for adjusting packets. The housing also serves as a support and guide for chock guide elements that in turn ret... | 11/30/2004 |
| 5020978 | Apparatus and method for reducing vehicular fuel pump noise Noise of a vehicular fuel pump is reduced by determining the major frequency range of the objectionable noise and the deformation patterns of vibrating elements of the pump, and providing a passive vibrator which has designed mass, stiffness and damping v... | 06/04/1991 |
