US PATENT SUBCLASS 246 / 464
.~ Solid

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

454  DF  CROSSINGS, FROGS, AND MATES {11}
464.~ Solid

DEFINITION

Classification: 246/464

(under subclass 454) Subject matter having crossings, frogs, and mates of solid cast or wrought construction or those whose component parts are joined by welding, (other than cast-welding).