US PATENT SUBCLASS 238 / 68
.~.~.~ Cast

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

29  DF  TIES {9}
54  DF  .~ Cross section {6}
67  DF  .~.~ T-shape {2}
68.~.~.~ Cast

DEFINITION

Classification: 238/68

(under subclass 67) except that the T-beams are of cast metal.