Bearings for transmission shafts, being parts of machines; Hydraulic controls for machines, motors and engines; Machine parts, namely, bearings; Machine parts, namely, couplers and semi-couplers of synthetic material; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Machine parts, namely, work holding fixtures for precision machining applications; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, gl...