Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D301687 | Mine roof support plate | James O. Gray | 1989-06-20 |
| 4611954 | Apparatus and method for mine installations | — | 1986-09-16 |
| 4607984 | Apparatus and method for mine application | — | 1986-08-26 |