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Heliseal Trademarks
HELISEAL
Oil and gas well equipment, namely, composite seals being structural parts for bridge plugs and fracturing plugs composed of plastic and synthetic rubber for controlling pressure or fluids downhole
Registered
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January 29, 2015
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86518767
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HELISEAL
OIL SEALS FOR ROTATING SHAFTS
Expired
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March 2, 1967
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72265784
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