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 |
| 6347797 | Game table with using modes convertible by way of rotation Game table with using modes convertible by way of rotation, including: a table frame two ends of which are disposed with two end boards, at least one end board being formed with at least one through hole; a table body which is a frame body, a top and a bo... | 02/19/2002 |
| 4160550 | Golf putting frame game device A golf putting frame game device is used on a flat surface to play golf putting games and features uniform rebounds of playing balls from the interior sides of the frame. The frame is provided with a capturing device in the form of a flexible cord which i... | 07/10/1979 |