Belt conveyors; Transmission gears for machines; Spindles being parts of machines; Pneumatic pumps; Roller bearings for machines; Bearing inserts for machines; Dynamo belts; Bearing housings for machines; Machine tools, namely, jaws for use in the precision clamping of work pieces; Power drill bits; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Chains for conveyors; Self-lubricating mechanical friction parts, especially of composite materials...