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 |
| 7036895 | Device to lock the cover of a door shelf of a refrigerator A device to lock a cover of a door shelf of a refrigerator. The door shelf has a main body and a cover hinged to the main body in such a way as to selectively open the main body. The device includes a seating unit and a projection. The seating unit has a seat and el... | 05/02/2006 |
| 7032271 | Noise control device for a steel door A noise control device for a steel door includes a buffer, a shock-absorbing member, a stopping member, or only includes a colliding member. The noise control device is installed at any location of a steel door and a casting where noise may be generated when the ste... | 04/25/2006 |
| 7024726 | Rotating door stop and method of use A rotating door stop includes a base member which is mounted to a baseboard or other structure. A stop member is connected to the base member so that the stop member freely rotates about its longitudinal axis with respect to the base member. Because the stop member ... | 04/11/2006 |
| 6954992 | Dryer Disclosed is an apparatus for opening/closing a door of a dryer, by which the door is opened/closed more simply and swiftly. The present invention includes a housing, a drum rotatably installed in the housing, a heating apparatus for supplying hot air to the drum, a... | 10/18/2005 |
| 6942256 | Door catch Door Catch with a catch retaining assembly and a catch. The catch assembly is comprised of a rigid first ball retaining mounting plate, a first ball, a concave disk, a rigid J shaped rod and a second ball retaining cup shape. The catch is comprised of a door mountin... | 09/13/2005 |
| 6629335 | Adjustable grip, clasping device An adjustable grip clasping device which comprises a post and a catch that clasps the post to hold an entry door open or a cabinet door closed. The catch may be mounted on a door and the post mounted in a door frame or wall baseboard, or the positions rev... | 10/07/2003 |
| 6527307 | Linear compression latch A linear compression latch includes a lever linked to a pawl. As the latch is opened the pawl is initially constrained to move vertically along with a carriage. After an intermediate position is achieved, the pawl is constrained to move horizontally withi... | 03/04/2003 |
| 6471262 | Device for locking a moveable part that is fitted onto a motor vehicle The invention relates to a device for locking a part (3; 21; 31) that is to be secured, arranged so that it can move on a motor vehicle, a securing part (11; 26; 36) engaging in a slot-shaped cavity (7; 28; 38) of the part (3; 21; 31) that is to be secure... | 10/29/2002 |
| 6015173 | Structure of door guard A guard for a door having a connection body with a hollow trough formed on an underside thereof. The connection body having a front wall with an inverted U-shaped trough. A fixed member is formed with two block pieces connected by a pillar at the center t... | 01/18/2000 |
| 5395658 | Frost de-icing salt-resistance of concrete constructions The frost-de-icing salt-resistance of concrete structures is improved by applying to the surface of the concrete an aqueous alkali silicate solution comprising ______________________________________ slilicic acid (calculated as SiO2) ... | 03/07/1995 |
| 4620733 | Shipboard internal locking system A locking bolt system for locking shipboard water tight doors, hatches and cuttles comprising plural bolts with racks thereon driven by pinions rotated by a drive shaft. Rotation of the drive shaft is controlled by a contoured locking disk which is locked ... | 11/04/1986 |
| 4218599 | Polymer spring This specification discloses a polymer spring including an elongated shank having a first end with a longitudinal slit and an enlarged portion, an integral enlarged head at a second end of the shank opposite from the first end, and an integral, cupped fla... | 08/19/1980 |