US PATENT SUBCLASS 238 / 84
.~.~ Plastic compound

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

29  DF  TIES {9}
83  DF  .~ Nonmetallic {1}
84.~.~ Plastic compound {2}
85  DF  .~.~.~> Internal reinforcements {8}
95  DF  .~.~.~> Armored {8}

DEFINITION

Classification: 238/84

Ties formed of cement, concrete, or other plastic compounds.

(1) Note. For special compositions of plastics for tie manufacture see Class 106, Compositions: Coating or Plastic.