Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8801503 | Grinding machine with multi-spindle grinding head | Roger L. Hackman, Mark A. Ritchie | 2014-08-12 |
| 4926554 | Collapsible knife | — | 1990-05-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8801503 | Grinding machine with multi-spindle grinding head | Roger L. Hackman, Mark A. Ritchie | 2014-08-12 |
| 4926554 | Collapsible knife | — | 1990-05-22 |