Kingwood, Texas
United States
4
2013-06-13
The entities that hold a legal rights for patent applications filed by inventor DuPriest Fred E.:
Fred E. DuPriest from Kingwood, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for controlling loss of drilling fluid
#2 | 2010-07-22Method for controlling loss of drilling fluid
#3 | 2009-10-08Method of drilling and production hydrocarbons from subsurface formations
#4 | 2008-05-08Method of drilling and producing hydrocarbons from subsurface formations
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