US PATENT SUBCLASS 246 / 446
.~.~ Double rail

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

415 R  DF  SWITCHES {21}
445  DF  .~ Stub {2}
446.~.~ Double rail

DEFINITION

Classification: 246/446

(under subclass 445) Subject matter having stub switches composed of pairs of parallel instead of single moving rails.