Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817813 | Reversible cutter bit | Tammy Elaine Dollar, Robert Glenn Hall | 2004-11-16 |
| 6808343 | Reversible cutter bit | Tammy Elaine Dollar, Robert Glenn Hall | 2004-10-26 |
| 6729814 | Reversible cutter bit | Tammy Elaine Dollar, Robert Glenn Hall | 2004-05-04 |