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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 |
| 6948216 | Window covering with improved anchor for operating cord A covering for an architectural opening includes a head rail, a bottom rail, and a blind material extending therebetween in addition to an operating element or lift cord extending from the head rail to the bottom rail and an improved anchoring system for securing th... | 09/27/2005 |
| 6454109 | Clothesline system with a support system and improved clothespins A clothesline system is provided for automatically applying clothespins to articles to be dried once they are placed on a clothesline. The clothesline system comprises first and second pulleys, which are positioned at a spaced apart distance from each oth... | 09/24/2002 |
| 6102321 | Line slack removing device A line in contact with an elongated mandrel has incremental lengths wrapped around the mandrel when the mandrel is rotated about a longitudinal axis. The mandrel has at least one transverse handle receiving opening therethrough. The handle when inserted i... | 08/15/2000 |
| 5803390 | Line tightener The distal end of a handle employed to rotate a line tightening mandrel has a line engaging stop thereon and a removable pin for holding the line on the stop to prevent the stop from working free of the line.... | 09/08/1998 |
| 4935155 | Clothes drying apparatus The invention provides a clothes drying apparatus with a central post member, a collar member axially displaceably mounted on the supporting post member and a plurality of support arms. A plurality of clothes line portions of a first clothes line extend b... | 06/19/1990 |
| 4735326 | Clothes drying apparatus The invention provides a clothes drying apparatus with a central post member, a collar member axially displaceably mounted on the supporting post member and a plurality of support arms. A plurality of clothes line portions extend between the support arms.... | 04/05/1988 |
| 4583649 | Line lock A line lock for a rotary clothes dryer includes a locking block having a socket which is positioned over an end of, and engages, an arm of a rotary clothes dryer, a plurality of apertures extending through the block, at least one of the clothes lines exte... | 04/22/1986 |
| 3993197 | Line tensioning device This disclosure pertains to a line tensioning device adapted to automatically tension a line fastened to an arm. The arm alternately engages outwardly spring biased rows of cams disposed on an upper and lowermost edge of a beam member which inturn is secu... | 11/23/1976 |
