US PATENT SUBCLASS 307 / 144
.~.~ Fluid-pressure actuator

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307 /   HD   ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS

112  DF  SWITCHING SYSTEMS {5}
139  DF  .~ Switch actuation {5}
144.~.~ Fluid-pressure actuator

DEFINITION

Classification: 307/144

(under subclass 139) Subject matter in which the switch is actuated by a fluid pressure actuator.