US PATENT SUBCLASS 246 / 254
.~ Trolley-completed circuits


Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

218  DF  ELECTRIC ACTUATION {9}
254.~ Trolley-completed circuits


DEFINITION

Classification: 246/254

(under subclass 218) Subject matter in which a trolley or plow, its wheel, or some member attached to the trolley makes a temporary electrical contact with one or more contact-surfaces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

31, 72, 77+, 81, 85, 92, 229, 233, and 234, for trolley-completed-circuit systems.

SEE OR SEARCH CLASS

40, Card, Picture, or Sign Exhibiting,

463+, for incidental disclosure of trolley-contacts.