US PATENT SUBCLASS 246 / 433
.~ Vertical motion

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

415 R  DF  SWITCHES {21}
433.~ Vertical motion

DEFINITION

Classification: 246/433

(under subclass 415) Subject matter having a switch which moves vertically instead of horizontally and with points usually rising and falling alternately.