[ Drilling rigs, floating or non-floating; parts of machines, namely, drilling heads; ] parts of machines, namely, drill chucks; [ cleaning machines for the oil industry; oil pumps specially used for petroleum drilling and processing; oil drilling machines; oil refining machines ]

'chuck':19 'clean':20 'drill':1,12,18,32,36 'float':3,7 'head':13 'industri':25 'machin':10,16,21,37,40 'name':11,17 'non':6 'non-float':5 'oil':24,26,35,38 'part':8,14 'petroleum':31 'process':34 'pump':27 'refin':39 'rig':2 'special':28 'use':29

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