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 |
| 7267223 | Belt conveyor with a supporting platform formed from a single sheet of metal A conveyor, primarily but not exclusively for use in the food industry, in which a conveyor belt (19) is supported on a belt platform (11) for movement relative thereto, and the belt platform (11) is formed as a unitary component from a single s... | 09/11/2007 |