Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9347316 | Telescopic mine roof support | Michael T. Shook | 2016-05-24 |
| 8851805 | Telescopic mine roof support | Michael T. Shook | 2014-10-07 |
| 6910834 | Mine prop | William L. Harbaugh | 2005-06-28 |
| 4240349 | Foldable linear explosive charge | — | 1980-12-23 |