US PATENT SUBCLASS 238 / 284
.~.~ Metal springs

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

264  DF  RAIL SEATS {15}
283  DF  .~ Cushions {2}
284.~.~ Metal springs

DEFINITION

Classification: 238/284

Metallic springs for supporting rails, either directly or through interposed seats.

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