US PATENT SUBCLASS 246 / 384
.~.~ Double rail

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

382  DF  SWITCH-CONNECTED FROGS {6}
383  DF  .~ Overlapped main {1}
384.~.~ Double rail

DEFINITION

Classification: 246/384

(under subclass 383) Subject matter having switch-connected frogs in which two sections of the siding-rail meet over the main-line rail.