73109863
Dec 17, 1976
Mar 24, 1981
Press Controls, Motor Controls for Machine Tools, Tachometer Generators for Machine Tools, Solenoid Operated Valves for Machine Tools, Limit and Disconnect Switches for Machine Tools, Pressure Switches for Machine Tools, Motion Detectors for Machine Tools, Fuse Clips for Machine Tools, and Electronic Safety Shields for Machine Tools Consisting of a Light Source and Photo Sensor Unit which Activates a Control to Stop a Metal Working Machine When an Obstruction Exists Between the Sensor and the Light Source
Electrical and Scientific Apparatus