Cypress, Texas
United States
2
2019-08-29
The entities that hold a legal rights for patent applications filed by inventor HEBERT Douglas:
Douglas HEBERT from Cypress, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Method of pumping fluid from a wellbore by a subsurface pump having an interior flow passage in communication with a fluid chamber via a filter positioned in a side wall of a plunger
#2 | 2018-04-26Subsurface pump for use in well artificial lift operations having an interior flow passage of a plunger being in communication with a fluid chamber via a filter
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