Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281060 | Annular hole cutter | Robert E. Strange, William C. McKay, Michael Fangmann | 1994-01-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5281060 | Annular hole cutter | Robert E. Strange, William C. McKay, Michael Fangmann | 1994-01-25 |