Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8052397 | Polygon rotor attachment device | — | 2011-11-08 |
| 4821763 | Tamperproof coupling | Rand H. Ackroyd | 1989-04-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8052397 | Polygon rotor attachment device | — | 2011-11-08 |
| 4821763 | Tamperproof coupling | Rand H. Ackroyd | 1989-04-18 |