86371898
Aug 20, 2014
Mar 15, 2016
Manually operated metal valves for oil, gas, and geothermal pipelines; metal valves not being parts of machines, namely, ball valves, expanding gate valves, slab gate valves, wellhead valves, x-mas tree valves, and their parts
Metal GoodsMinehead apparatus for excavators, namely, mining bits; valve operation machines, namely, hydraulic valve actuators and air-pressure valve actuators in the nature of pneumatic valve actuators
MachineryMinehead apparatus for excavators, namely, electric valve actuators
Electrical and Scientific Apparatus