Spring, Texas
United States
4
2006-08-29
The entities that hold a legal rights for patent applications filed by inventor Ringgenberg Paul D.:
Paul D. Ringgenberg from Spring, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Drilling formation tester, apparatus and methods of testing and monitoring status of tester
#2 | 2006-08-22Drilling formation tester, apparatus and methods of testing and monitoring status of tester
#3 | 2006-05-23Downhole sealing tools and method of use
#4 | 2005-11-22Downhole sealing tools and method of use
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