[grouting machines for use in well drilling,] drill rigs and drill rig accessories; namely, floating subs, coring heads, compressors, mud pumps, water injectors, lazy suzan drill pipe loaders, pipe racks, pipe handling arms, jib booms, winches, [catheads,] mast locks, inertia breakouts, bit breakers, [auger drives, auger racks,] operator cabs and sliding angle masts

'accessori':13 'angl':52 'arm':33 'auger':44,46 'bit':42 'boom':35 'breaker':43 'breakout':41 'cab':49 'cathead':37 'compressor':19 'core':17 'drill':7,8,11,26 'drive':45 'float':15 'grout':1 'handl':32 'head':18 'inertia':40 'injector':23 'jib':34 'lazi':24 'loader':28 'lock':39 'machin':2 'mast':38,53 'mud':20 'name':14 'oper':48 'pipe':27,29,31 'pump':21 'rack':30,47 'rig':9,12 'slide':51 'sub':16 'suzan':25 'use':4 'water':22 'well':6 'winch':36

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