US PATENT SUBCLASS 246 / 255
.~ Car-wheel-completed circuits

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

218  DF  ELECTRIC ACTUATION {9}
255.~ Car-wheel-completed circuits

DEFINITION

Classification: 246/255

(under subclass 218) Subject matter in which a car-wheel or a special wheel carried by a car makes a temporary electrical contact between two or more contact-surfaces.