US PATENT SUBCLASS 238 / 2
ROADBED

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

2ROADBED {4}
3  DF  .~> Highway track {2}
6  DF  .~> Continuous {1}
8  DF  .~> Street crossing
9  DF  .~> Rail paving

DEFINITION

Classification: 238/2

(under the class definition) Railroad ballast structure and form for the reception of the railway-track.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles,

544+, for nominally claimed metallic track, that is, having some structural description, but insufficient to limit its use to that of a railway track, element, adjunct or material.