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Valuprop Trademarks
VALUPROP
Ceramic propping agent for oilfield fracturing operations
Abandoned
·
May 20, 2014
·
86285977
·
VALUPROP
Ceramic propping agent for oilfield fracturing operations
Abandoned
·
October 27, 2010
·
85162591
·
VALUPROP
ceramic propping agent for oilfield fracturing operations
Expired
·
October 12, 1995
·
75004836
·
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