US PATENT SUBCLASS 238 / 279
.~ Gravity

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

264  DF  RAIL SEATS {15}
279.~ Gravity

DEFINITION

Classification: 238/279

The weight of the rails acts upon the seat members through levers, wedges, or rocking elements to hold the rail to its seat.

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