Houston, Texas
United States
7
2019-02-07
The entities that hold a legal rights for patent applications filed by inventor Olvera Alfred:
Alfred Olvera from Houston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Test dart system and method
#2 | 2015-04-30Stem head adapter with pistons
#3 | 2014-05-15SHRINKAGE COMPENSATED SEAL ASSEMBLY AND RELATED METHODS
#4 | 2014-01-02APPARATUS AND METHOD FOR BACKSEATING A GATE VALVE
#5 | 2012-10-04Differential screw assembly for varying torque for valve
#6 | 2012-08-16Reinforced frac tubing head
#7 | 2010-10-21Installable load shoulder for a wellhead
591936 ⎘