US PATENT SUBCLASS 477 / 89
.~.~.~.~ Electric control

Current as of: June, 1999
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477 /   HD   INTERRELATED POWER DELIVERY CONTROLS, INCLUDING ENGINE CONTROL

34  DF  TRANSMISSION CONTROL {15}
70  DF  .~ With clutch control {7}
86  DF  .~.~ Clutch controlled {2}
88  DF  .~.~.~ Vacuum actuated clutch {1}
89.~.~.~.~ Electric control

DEFINITION

Classification: 477/89

Electric control:

(under subclass 88) Subject matter wherein the negative pressure is controlled by electrical means.