Explosives and detonators, namely, shaped charges, detonating cords, boosters and detonating plugs, high-temperature and pressure-resistant detonators, detonator igniters, percussion initiators

'booster':9 'charg':6 'cord':8 'deton':3,7,11,20,21 'explos':1 'high':14 'high-temperatur':13 'ignit':22 'initi':24 'name':4 'percuss':23 'plug':12 'pressur':18 'pressure-resist':17 'resist':19 'shape':5 'temperatur':15

Equipment and machines for oil extraction from oil fields, namely, hollow carrier and through-tubing gun systems comprised of perforating guns, boosters being metal tubes for the transfer of ballistic energy, and spacer hardware in the nature of O rings, springs, spacer plates, retention rings, all of the foregoing sold as a unit; equipment and machines for oil and oil fields, namely, hollow carrier and through-tubing gun systems comprising perforating guns

'ballist':31 'booster':23 'carrier':12,65 'compris':19,72 'energi':32 'equip':1,55 'extract':6 'field':9,62 'forego':50 'gun':17,22,70,74 'hardwar':35 'hollow':11,64 'machin':3,57 'metal':25 'name':10,63 'natur':38 'o':40 'oil':5,8,59,61 'perfor':21,73 'plate':44 'retent':45 'ring':41,46 'sold':51 'spacer':34,43 'spring':42 'system':18,71 'through-tub':14,67 'transfer':29 'tube':16,26,69 'unit':54

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