Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5784729 | Invalid hoist | Robert J. Dunn, John Greaves, Richard Ian Lees, Bruce Edward Somerton | 1998-07-28 |
| D376886 | Invalid hoist | Robert J. Dunn, John Greaves, Richard Ian Lees, Bruce Edward Somerton | 1996-12-24 |