| 2023/0407,704 | DRILLING DEVICE WITH FLUID COLUMN RESONATOR | Nov 05, 21 | Dec 21, 23 | MINCON INTERNATIONAL LIMITED |
| 2023/0374,859 | RECIPROCATING DRIVE APPARATUS | Dec 16, 21 | Nov 23, 23 | Rotojar Innovations Limited |
| 2012/0152,576 | EXTRA AREA DOWN-HOLE HAMMER APPARATUS AND METHOD | Dec 15, 11 | Jun 21, 12 | VALHALLA TECHNOLOGIES, LLC |
| 2012/0067,606 | HYDRAULIC BREAKER | May 20, 10 | Mar 22, 12 | Not available |
| 2010/0258,326 | Method and device | Apr 19, 10 | Oct 14, 10 | Not available |
| 2010/0200,301 | DOWN HOLE HAMMER HAVING ELEVATED EXHAUST | Feb 11, 09 | Aug 12, 10 | EPIROC DRILLING TOOLS LLC |
| 2010/0126,772 | HYDRO-PERCUSSIVE MECHANISIMS FOR DRILLING SYSTEMS | Nov 23, 09 | May 27, 10 | LONGYEAR TM, INC. |
| 2010/0051,348 | ROCK DRILLING EQUIPMENT AND A METHOD IN ASSOCIATION WITH SAME | Jan 10, 08 | Mar 04, 10 | ATLAS COPCO ROCK DRILLS AB |
| 2009/0194,336 | Damping and Drilling Machine Including Such a Damping Device | Dec 06, 06 | Aug 06, 09 | ATLAS COPCO ROCK DRILLS AB |
| 2008/0041,628 | Enhanced Drill Bit Lubrication Apparatus and Method | Oct 19, 06 | Feb 21, 08 | Not available |
| 2008/0041,630 | EARTH BIT HAVING A PRESSURE RELIEF VALVE | Aug 18, 07 | Feb 21, 08 | EPIROC DRILLING TOOLS LLC |
| 2007/0107,940 | Drill bit lubricant utilizing a sulfur-phosphorous EP agent | Nov 14, 05 | May 17, 07 | SMITH INTERNATIONAL, INC. |
| 2006/0249,311 | Grease filling arrangement in a cutter for a boring head | Mar 14, 03 | Nov 09, 06 | ATLAS COPCO SECOROC AB |
| 2006/0243,494 | Earth boring bit lubricant chamber barrier member with dispersed fibers | Apr 28, 05 | Nov 02, 06 | BAKER HUGHES INCORPORATED |