US PATENT SUBCLASS 91 / 42
.~ By electrical control means

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

41  DF  WITH CORRELATED CONTROL OF MOTIVE FLUID AND LOCKING MEANS {4}
42.~ By electrical control means

DEFINITION

Classification: 91/42

(under subclass 41) Apparatus in which the control means for the motive fluid and the control means for the holding means are interconnected by electrical circuit means in such a way as to provide the correlated operation of the two control means.