US PATENT SUBCLASS 238 / 237
.~.~.~ Twin

Current as of: June, 1999
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238 /   HD   RAILWAYS: SURFACE TRACK

151  DF  RAIL JOINTS {28}
230  DF  .~ Scarf {5}
236  DF  .~.~ Laterally assembled {2}
237.~.~.~ Twin

DEFINITION

Classification: 238/237

(under subclass 236) except that the specially-formed rail ends are duplicates.