US PATENT SUBCLASS 246 / 466
.~.~ Street and steam

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

454  DF  CROSSINGS, FROGS, AND MATES {11}
465  DF  .~ Crossings {2}
466.~.~ Street and steam

DEFINITION

Classification: 246/466

(under subclass 465) Subject matter having crossings placed at the intersection of steam with street railway tracks and in which the former have unbroken lines of rail.