Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779222 | Tapered plug valve | Keith J. Hollingworth | 1998-07-14 |
| 5591098 | Locking differential | Norman F. McDonald | 1997-01-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779222 | Tapered plug valve | Keith J. Hollingworth | 1998-07-14 |
| 5591098 | Locking differential | Norman F. McDonald | 1997-01-07 |