CROWN
Manually operated metal valves for use in the oil and gas, storage, cavern, and thermal wells to regulate the flow of fluid, namely, gate valves, check valves, and pipeline valves; metal hardware items for use in wellheads, namely, casing heads, casing spools, casing hangers, tubing heads, tubing hangers, crosses and tees, casing caps, and primary and secondary packoffs; metal hardware items for use in wellheads, namely, adapter spools, tubing head adapters, top connectors, and tree assemblie...
Registered · December 16, 2019 · 79286092 ·