Machine parts, namely, grit-faced power tong dies for use with mechanized tongs to grip and hold plated oilfield tubulars for being threadably connected one to another to form a tubular string without unwanted marking and scoring of a the plated surface thereon

'anoth':28 'connect':25 'die':9 'face':6 'form':30 'grip':16 'grit':5 'grit-fac':4 'hold':18 'machin':1 'mark':36 'mechan':13 'name':3 'oilfield':20 'one':26 'part':2 'plate':19,42 'power':7 'score':38 'string':33 'surfac':43 'thereon':44 'threadabl':24 'tong':8,14 'tubular':21,32 'unwant':35 'use':11 'without':34

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