Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819883 | Bottle breaking apparatus | Matthew T. Boswell | 1989-04-11 |
| 4786000 | Bottle breaking apparatus | Matthew T. Boswell | 1988-11-22 |
| 4594487 | Mounting means for proximity sensing device | Roman Grassl, Thomas A. Craig | 1986-06-10 |