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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 |
| 6340168 | Convertible chair and walker assembly A convertible chair and walker assembly for providing additional support for persons with limited mobility. The convertible chair and walker assembly includes a frame assembly, a plurality of wheels coupled to the frame assembly adapted for facilitating t... | 01/22/2002 |
| 5967600 | Convertible work station A convertible work station composed of chair and desk sections which are separated from each other in an active mode of the station and are combined in a storage mode to form a compact cube having square faces. The chair section is defined by a seat mount... | 10/19/1999 |
| 5669658 | Convertible table and support A convertible table and support characterized by a support which is pivotally mounted on a support frame and may be reversibly pivoted from an upright sitting position resting on the support frame to an inverted position adjacent to the support frame to d... | 09/23/1997 |
| 4040693 | Galley unit A multi-purpose galley assembly for use on boats, recreational vehicles, trailers, camper trailers, and the like. The galley assembly has an upright base with cabinets below and a kitchen unit, including a stove and range in the upper portion thereof. A p... | 08/09/1977 |
| 3982784 | Multi-functional furniture A piece of furniture in which two side walls are joined to respective spaced edges of a back wall extending in a common direction so as to define a channel, and a partition perpendicular to the back and side walls bisects the channel, may constitute a cha... | 09/28/1976 |
