Houston, Texas
United States
4
2007-03-08
The entities that hold a legal rights for patent applications filed by inventor Schmidt David A.:
David A. Schmidt from Houston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Apparatus and methods for servicing a hydraulic choke
#2 | 2005-10-27Manipulator system for servicing a hydraulic choke
#3 | 2005-04-26Modular actuator system for valves and chokes
#4 | 2005-04-07Shear mechanism for backpressure relief in a choke valve
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