US PATENT SUBCLASS 238 / 232
.~.~.~ Twin

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

151  DF  RAIL JOINTS {28}
230  DF  .~ Scarf {5}
231  DF  .~.~ Longitudinally assembled {2}
232.~.~.~ Twin

DEFINITION

Classification: 238/232

(under subclass 231) except that joined rail ends are exact duplicates.