Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146055 | Mine roof bolt anchor | — | 2000-11-14 |
| 5885031 | Mine roof bolt anchor | — | 1999-03-23 |
| 5161916 | Self-seating expansion anchor | Scott White | 1992-11-10 |
| 4876877 | Portable tool for bending roof bolts for insertion in mine roof openings | — | 1989-10-31 |
| 4749310 | Mine roof truss | — | 1988-06-07 |
| 4556344 | Combination expansion shell and resin secured mine roof anchor assembly | — | 1985-12-03 |
| 4534680 | Combination expansion shell and resin secured mine roof anchor assembly | Frederick Carr | 1985-08-13 |
| 4534679 | Combination expansion shell and resin secured mine roof anchor assembly | Frederick Carr | 1985-08-13 |
| 4483645 | Combination expansion shell and resin secured mine roof anchor assembly | Frederick Carr | 1984-11-20 |
| 4437795 | Mine roof anchor assembly | — | 1984-03-20 |
| 4347020 | Mine roof bolt assembly | Frederick Carr | 1982-08-31 |
| 4342527 | Support assembly for underground mine and tunnel roofs | — | 1982-08-03 |
| 4249835 | Mine roof support plate | — | 1981-02-10 |