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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 |
| 4120371 | Load holder extension for beam balance scales An extension platform for a beam balance scale and the combination of such a platform with a beam balance scale. The extension platform includes a generally planar upper surface and a lower surface having a grid of reinforcing ribs formed thereon subdivid... | 10/17/1978 |
