Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8608134 | Crane hook block | Dirk Albert Stamhuis, William J. O'Neil, Alan E. Pleuss | 2013-12-17 |
| 7946560 | Crane hook block | Dirk Albert Stamhuis, William J. O'Neil, Alan E. Pleuss | 2011-05-24 |