US PATENT SUBCLASS 238 / 97
.~.~.~.~ Tube

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

29  DF  TIES {9}
83  DF  .~ Nonmetallic {1}
84  DF  .~.~ Plastic compound {2}
95  DF  .~.~.~ Armored {8}
97.~.~.~.~ Tube

DEFINITION

Classification: 238/97

Tubular casings for cement ties.