Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659269 | Apparatus and method for temporary support and isolation for a conveyor belt | John A. Phillips, Michael B. McMillion | 2003-12-09 |
| 5938004 | Method of providing temporary support for an extended conveyor belt | David C. Tonkin | 1999-08-17 |
| 4957405 | Apparatus for mining | Harry J. Brown | 1990-09-18 |
| 4798279 | Mine haulage method and apparatus | Richard E. Doerr, Harry J. Brown | 1989-01-17 |
| D255525 | Sleeping bag | — | 1980-06-24 |