75818087
Oct 8, 1999
Feb 5, 2002
Active Trademark
CONTROL SYSTEM FOR DRILLS USED IN MINING, OIL FIELDS, EXPLORATION AND WATER WELLS WHICH IMPROVES HOLE ACCURACY AND INCREASE DRILL BIT LIFE CONSISTING OF COMPUTER HARDWARE, A LADDER LOGIC PROCESSOR, AND A COMPUTER SOFTWARE OPERATING SYSTEM
Electrical and Scientific Apparatus