US PATENT SUBCLASS 238 / 302
.~.~ Spring

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

287  DF  TIE-PLATES {16}
301  DF  .~ Reversible {1}
302.~.~ Spring

DEFINITION

Classification: 238/302

Tie-plates adapted to act as springs or cushions.