US PATENT SUBCLASS 246 / 388
.~ Center-pivoted rail

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

382  DF  SWITCH-CONNECTED FROGS {6}
388.~ Center-pivoted rail

DEFINITION

Classification: 246/388

(under subclass 382) Subject matter in which a center-pivoted rail under subclass 382 is placed at the frog-point.

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377, for pivoted rail continuous rail crossings.