computers for use in regulating the flow of liquid and dry materials used in measurement applications and for use in regulating peripheral devices comprising flowmeters, valves, variable speed motors and load cells

Electronically Actuated Control Apparatus for Use with Air and Gas Compressors

SECURITY SYSTEMS-NAMELY, COMBINATION BURGLAR AND FIRE SENSING ALARMS AND PARTS THEREFOR

AUTOMATIC TIME VARIABLE THERMOSTAT FOR REGULATING A HEATING AND/OR COOLING SYSTEM

AUTOMATIC REGULATORS FOR CONTROLLING THE SPEED OF ENGINE DRIVEN COMPRESSORS OR PUMPS