E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/00 (2006.01)
Patent
CA 2463148
THE MAINVILLE HOLE CLEANER IS A PORTABLE DESIGH UNIT USED TO CLEANED PREVIOUSLY DRILLED HOLES WITHOUHT THE USE OF AN ITH DRILL AND RODS. THIS UNIT IS EQUIPED WITH REMOTE PACKAGE TO CLEAN HOLES THAT HAVE BEEN BLASTED. DRAIN HOLES SERVICE HOLES PRODUCTION HOLES.
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