Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087963 | Locking device for securely positioning an object on a rope or line | David Richard Feingold | 2018-10-02 |
| 8727946 | Spotting device | Mark Greenhill, Brad Hill | 2014-05-20 |
| 8475338 | Linear motor system for an exercise machine | Mark Greenhill, Brad Hill | 2013-07-02 |
| 6993816 | Retaining ring installation tool | — | 2006-02-07 |
| 6758465 | Wave spring with single shim end | Mark Greenhill | 2004-07-06 |
| 6254071 | Single-turn, round wire wave spring | — | 2001-07-03 |
| 6249946 | Removal tool for internal and external retaining rings | — | 2001-06-26 |
| 6250618 | Curved wave shim | — | 2001-06-26 |
| 5639074 | Interlaced wave spring | David W. Maxwell | 1997-06-17 |
| 4901987 | Crest-to-crest compression spring with circular flat shim ends | Charles Greenhill | 1990-02-20 |
| 4752178 | Waved retaining ring | — | 1988-06-21 |