earth drilling and oil and gas well production, instrumentation and measurement devices; namely, downhole measurement-while-drilling tools, pump controllers, remote control valves, and production fluid monitors; and instrumentation and measurement devices for process, environmental, and medical testing; namely, in-process weighting apparatus, level controllers, and process flow stream analyzers

'analyz':52 'apparatus':45 'control':21,23,47 'devic':12,33 'downhol':14 'drill':2,18 'earth':1 'environment':36 'flow':50 'fluid':27 'gas':6 'in-process':41 'instrument':9,30 'level':46 'measur':11,16,32 'measurement-while-dril':15 'medic':38 'monitor':28 'name':13,40 'oil':4 'process':35,43,49 'product':8,26 'pump':20 'remot':22 'stream':51 'test':39 'tool':19 'valv':24 'weight':44 'well':7

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