Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331889 | Manual multiple size can crusher | John Cowan, Harold T. Coyle, Robert DeGuise | 1994-07-26 |
| 5199756 | Locking tongs | Robert DeGuise | 1993-04-06 |
| D329789 | Can opener | John Cowan | 1992-09-29 |
| 5052110 | Can opener | — | 1991-10-01 |