US PATENT SUBCLASS 60 / 540
.~.~.~ Including timer or time delay means the cycle

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
533  DF  .~ Pulsator {25}
537  DF  .~.~ Programmed, self-cycled or self-pulsed {7}
540.~.~.~ Including timer or time delay means the cycle

DEFINITION

Classification: 60/540

(under subclass 537) Apparatus in which a step in the cycle is controlled by a period establishing device or a time of day clock.