Humble, Texas
United States
4
2012-05-10
The entities that hold a legal rights for patent applications filed by inventor Jancha Robert:
Robert Jancha from Humble, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Subsurface safety valve flapper
#2 | 2011-05-19Subsurface Safety Valve Flapper
#3 | 2010-07-15Subsurface Safety Valve Flapper
#4 | 2009-10-01Safety valve torsional spring assembly and method
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