73076382
Feb 5, 1976
Sep 7, 1976
MACHINE TOOLS AND PARTS THEREOF FOR USE IN THE WELL INDUSTRY, INCLUDING BAFFLES, BAFFLE PLATES, STOP RINGS, COLLARS, PLUGS, BASKETS, DOWN HOLE TOOLS, SCRATCHERS, CASINGS, SHOES, FLOATS, VALVES, PIPES, PIPE FITTINGS AND THE LIKE
Machinery