U.S. federal trademark · Serial No. 72398049 · Reg. No. 1003395
UNDERGROUND WORKING, DIGGING AND INSTALLING WELLS, PARTICULARLY BUILDING AND INSTALLING HORIZONTAL UNDERGROUND WATER WELLS, BUILDING BENTONITE SLIT-WALLS, INSTALLING DIP PIPES, ALLUVIAL ANCHORS, ROCK ANCHORS, AND INSTALLING VERTICAL FILTER WELLS
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