|
US3764888A
|
|
Direct current tachometer system
|
|
US3746902A
|
|
Rotor and stator mounting for dynamic machines
|
|
US3516617A
|
|
Digital system for automatic splice control
|
|
US3543116A
|
|
Digital variable speed controller comparing a tachometer pulse source with a reference
|
|
US3551752A
|
|
Digital efflux ratio controller
|
|
US3534261A
|
|
Frequency difference counter employing digital subtraction of pulses
|
|
US3492518A
|
|
Magnetic-electric pickup for toothed wheels and the like
|
|
US3394264A
|
|
Zero speed tachometer with anti-jitter arrangement
|
|
US3354298A
|
|
Electronic function generator
|
|
US3199391A
|
|
Flying shear control and sheet number and length indicator
|
|
US3328683A
|
|
Low rise time surge testing apparatus
|
|
US3264580A
|
|
Power converter
|
|
US3235743A
|
|
Electric control system for sequentially adding or removing generators in a power system
|
|
US3308435A
|
|
Control for counting mechanism
|
|
US3134076A
|
|
Frequency control system
|
|
US3166753A
|
|
Monitor control circuit
|
|
US3137825A
|
|
Three-phase electronic signal generator
|
|
US3074015A
|
|
Frequency modulation meter
|
|
US3108207A
|
|
Count rate and trend monitoring system
|
|
US2962673A
|
|
Amplitude modulation meter
|
