US PATENT SUBCLASS 238 / 143
.~ Detachable head

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

122  DF  RAILS {20}
143.~ Detachable head {4}
144  DF  .~.~> Lap web
145  DF  .~.~> Grooved web
146  DF  .~.~> Integral grooved base
147  DF  .~.~> Web clamp

DEFINITION

Classification: 238/143

Rails in which the head is detachable from lower portion of the rail.