US PATENT SUBCLASS 238 / 183
.~ Integral web key and bars

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

151  DF  RAIL JOINTS {28}
183.~ Integral web key and bars

DEFINITION

Classification: 238/183

The lug-key bridges recessed abutting rail-webs and is integral with both splice-bars.