Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10954646 | End frame for use with trench shield | — | 2021-03-23 |
| 7258511 | Shoring system | — | 2007-08-21 |
| 7101119 | Shoring assembly and method | — | 2006-09-05 |
| 5868060 | Quick-release cam lock | Michael Plank, Fred B. Plummer | 1999-02-09 |
| 5513555 | Quick-release cam lock with locking pin | Michael Plank, Fred B. Plummer | 1996-05-07 |