73037202
Nov 15, 1974
Aug 12, 1975
ELECTRIC SPEED SETTING TRANSDUCERS; MAGNETIC SENSING DEVICES; FLUID PRESSURE SENSING DEVICES; ELECTRICAL TIMING CONTROLS; TEMPERATURE SENSITIVE CONTROLS; FREQUENCY SENSORS; ELECTRICAL LOAD SENSORS; AC-DC CONVERTERS; ELECTRONIC AMPLIFIERS, SIGNAL GENERATORS; POWER TRANSFER CONTROL CIRCUITS; POWER SUPPLIES; SIGNAL COMPARING CIRCUITS; VOLTAGE LEVEL MONITORING CIRCUITS; SIGNAL CONVERTERS; POTENTIOMETERS; CONTROLS FOR SYNCHRONIZING SPEED OF PRIME MOVERS; CONTROLS FOR REGULATING PITCH OF PARALLEL OPERATING PROPELLERS; CONTROLS FOR SYNCHRONIZING PARALLEL OPERATING ELECTRICAL POWER GENERATORS; ELECTRICALLY CONTROLLED HYDRAULIC ACTUATORS
Electrical and Scientific Apparatus