Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350307 | Two-sided magnetized diverting plate for hammermill | — | 1982-09-21 |
| 4291736 | Magnetic hammer | Alan D. Robertson, Blythe J. Robertson | 1981-09-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350307 | Two-sided magnetized diverting plate for hammermill | — | 1982-09-21 |
| 4291736 | Magnetic hammer | Alan D. Robertson, Blythe J. Robertson | 1981-09-29 |