US PATENT SUBCLASS 238 / 229
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Current as of: June, 1999
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238 /   HD   RAILWAYS: SURFACE TRACK

151  DF  RAIL JOINTS {28}
218  DF  .~ Tread bridge {7}
229.~.~ Web posts


DEFINITION

Classification: 238/229

The rail ends are centrally slotted from top to bottom to receive vertical tread-plates.