remotely controlled, television monitored sealing and packing machines, quick setting chemical grout, pumps, air motors, pneumatic control units, chemical tanks for holding line repair chemicals, and hose means for conducting air and chemicals to sealing packers, sold as a unit

'air':14,31 'chemic':11,19,25,33 'conduct':30 'control':2,17 'grout':12 'hold':22 'hose':27 'line':23 'machin':8 'mean':28 'monitor':4 'motor':15 'pack':7 'packer':36 'pneumat':16 'pump':13 'quick':9 'remot':1 'repair':24 'seal':5,35 'set':10 'sold':37 'tank':20 'televis':3 'unit':18,40

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