Concord, Ohio
United States
4
2011-11-03
The entities that hold a legal rights for patent applications filed by inventor Hasak David:
David Hasak from Concord, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Valve actuator with vent
#2 | 2010-02-18VALVE AND ACTUATOR ASSEMBLIES
#3 | 2006-09-07Valve and actuator assemblies
#4 | 2006-01-26Ball valve seat arrangement
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