US PATENT SUBCLASS 238 / 71
.~.~.~ Multiple

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


238 /   HD   RAILWAYS: SURFACE TRACK

29  DF  TIES {9}
54  DF  .~ Cross section {6}
70  DF  .~.~ Tubular {4}
71.~.~.~ Multiple

DEFINITION

Classification: 238/71

Ties having a plurality of longitudinal tubular apertures therethrough.