US PATENT SUBCLASS 246 / 313
.~.~.~ Vertical motion


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

270 R  DF  VEHICLE-ENERGY ACTUATION {11}
292  DF  .~ Signals and gates, automatic {2}
297  DF  .~.~ Track mechanism {7}
313.~.~.~ Vertical motion


DEFINITION

Classification: 246/313

(under subclass 297) Subject matter having track devices which move vertically.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204, 246+, 307+, and 351+, for similar track mechanism.