Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11001973 | Apparatus and components for turnout/crossover section for railway track | Donald McCallum, Henry Maxwell | 2021-05-11 |
| 4960345 | System for construction of golf course sand bunkers | Dennis Hurley, Ken Gorzycki | 1990-10-02 |
| 4830544 | Tie-rod anchoring apparatus and method | — | 1989-05-16 |