U.S. federal trademark · Serial No. 99195825
Automatic pressure control apparatus made of metal for attachment to a supporting valve to protect critical internal components of the supporting and main valves from harmful process fluids
Pressure control apparatus, namely, control valves for regulating the flow of gasses and liquids, made of metal for attachment to a supporting valve to protect critical internal components of the supporting and main valves from harmful process fluids sold as an integral component of pressure relief valves
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