Clamping devices for machine tools, namely, three jaw chucks, collet chucks, stationary chucks, and parts therefor; power tools, namely, arbors, mandrels for clamping work-pieces, clamping bushings, collets, and parts therefor; feed fingers on machine tools; bar guidance for bar-fed work-pieces on machine tools; tool-changing fixtures, namely, pneumatically and manually operated changing fixtures for changing clamping heads; work-piece feeding devices, namely, power operated handling and feed...

Manufacturing of precision parts, especially for clamping devices, to the order and specification of others