Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6112416 | Weed and grass trimmer attachment head | Roy Bridges, David Harris | 2000-09-05 |
| 5791327 | Personal protection device having a non-lethal projectile | Donald E. Riggs, deceased, Bernard K. Hymmen | 1998-08-11 |
| 4708560 | Bookbinding method using strips | William H. Abildgaard | 1987-11-24 |
| 4656716 | Hand tool for bending and straightening studs of bookbinding strips | — | 1987-04-14 |
| 4656907 | Paper punch | — | 1987-04-14 |
| 4625996 | Bookbinding strips and method of binding books employing serrated studs | — | 1986-12-02 |