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 |
| 7488284 | Implantable prosthesis with direct mechanical stimulation of the inner ear A prosthesis for stimulation of the inner ear, comprising means for excitation which generate vibrations which can excite the ear of a patient, and an implantable part comprising a rod which can transmit vibrations and which is configured in such a way that it can d... | 02/10/2009 |