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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 |
| 5634215 | Work pant garment fabricated from abrasion-resistant material coated with polyurethane A work pant garment for use by a wearer in an environment wherein the garment is subject to excessive wear conditions includes an upper portion that has a front panel and a seat panel, and a lower portion that has pant legs which are integrally joined to ... | 06/03/1997 |
