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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 |
| 4811920 | Aerial device A load carrying aerial device having an inflatable component which is inflatable from a collapsed configuration to an inflated aerofoil configuration and which is maintained inflated in flight by air introduced into the component through an air intake as ... | 03/14/1989 |
| 4573924 | Target image presentation system A target presentation system for displaying images of a target on the interior surface of a part-spherical dome provides an observer within the dome with a visual representation of an aerial target flying a flight profile within an airspace surrounding th... | 03/04/1986 |
