Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10640979 | Prefabricated offset shingle | Lawrence J. Grubka | 2020-05-05 |
| 6860145 | Chassis dynamometer | Allen B Bergst, John F Petelinsek, Alan D Petelinsek, Daniel Strain, Gregory D. Johnson | 2005-03-01 |
| 6824339 | Belt winch speed handle | — | 2004-11-30 |