US PATENT SUBCLASS 238 / 6
.~ Continuous

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

2  DF  ROADBED {4}
6.~ Continuous {1}
7  DF  .~.~> Concrete

DEFINITION

Classification: 238/6

(under subclass 2) Structure wherein the surface of the road-bed has a continuous wooden or metal covering between the rails, or the covering may also extend outside the rail-bases.