Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7434635 | Tin seat for rock drill insert | Rob Simmons | 2008-10-14 |
| 7353890 | Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer | — | 2008-04-08 |
| 6499544 | Percussive down-the-hole hammer for rock drilling, and a one-way valve used therein | — | 2002-12-31 |
| 6454026 | Percussive down-the-hole hammer for rock drilling, a top sub used therein and a method for adjusting air pressure | — | 2002-09-24 |
| 5407021 | Down-the-hole hammer drill having reverse circulation | Robert F. Kane, Faisal J. Yousef, Kenneth Ahlhorn | 1995-04-18 |