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 |
| 5066188 | Apparatus for loading and unloading open top railroad cars An apparatus for loading and unloading open top railroad cars (46) utilizing a conventional material handling equipment item attached to a slidable structure (20). The material handling equipment item is equipped with a boom structure (64) and material ha... | 11/19/1991 |