Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11585376 | Rubber bush | — | 2023-02-21 |
| 7267485 | Annular disk for a sliding bearing | Keit Wagener, Thomas Fangmann | 2007-09-11 |
| 6375396 | Hole cutting tool with drill pilot | William C. McKay, Robert E. Strange | 2002-04-23 |
| 5415503 | Portable drilling machine with internal motor control cord | Robert E. Strange, William C. McKay | 1995-05-16 |
| 5281060 | Annular hole cutter | Robert E. Strange, William C. McKay, Timothy M. Flaherty | 1994-01-25 |
| 4596499 | Center-free drill | Robert E. Strange, William C. McKay | 1986-06-24 |
| 4390309 | Cradle pipe adaptor for magnetic drill | — | 1983-06-28 |