Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6554716 | Golf "swing for accuracy" mat A Golf "Swing For Accuracy" Mat for promoting accurate and consistent contact between a golf club and a golf ball as a golfer swings the golf club, wherein the first preferred embodiment of the Golf "Swing For Accuracy" Mat includes a mat, a ball device i... | 04/29/2003 |
| 6348018 | American football supported with air layer An American football includes a ball cover including four elliptical cover pieces sewn edge to edge together, wherein each cover piece comprises an outer elliptical cover skins, an elliptical inner lining for supporting between the outer cover skin, and a... | 02/19/2002 |
| 5513842 | Golf swing training aid A golf swing practice device for assisting a golfer in the development of a correct golf swing includes a flat support base, an upright supporting member extending upwardly from a surface of the base, and a bracket vertically adjustably mounted on the upr... | 05/07/1996 |
| 5370395 | Golf swing analyzing device and method A golf swing analyzing device and method in which a first ball is suspended for rotation about a substantially horizontal axis and a second ball is suspended at some distance from the first ball for rotation about a substantially horizontal axis to provid... | 12/06/1994 |
| 5366225 | Golf swing training apparatus A golf swing training apparatus for practicing swinging of a golf club such that a head of the club passes through a proper swing path when striking a golf ball, the apparatus including a base plate structured for anchoring to a support surface and a pair... | 11/22/1994 |
| 5275406 | Golf practice device The improved golf practice device includes a base (32) having an upright center post (24) and an integrally connected center ground pin (14). The base is adapted to be secured to the ground by a unique center pin with the middle portion of the pin formed ... | 01/04/1994 |
| 5133549 | Ball-hitting practice device A ball-hitting practice device having support arms rotatable about an axis with the arm rotation restrained by a torque releasable clutch. The clutch has a fixed clutch plate having a pair of recesses in a surface facing a rotatable clutch plate. The rota... | 07/28/1992 |
| 4717153 | Golf practice device A golf practice device has a rotor with three simulated golf ball targets spaced equidistant from one another around the rotor, each target having mutually perpendicular webs and flanges forming a lightweight yet rugged construction readily molded in a un... | 01/05/1988 |
