US PATENT SUBCLASS 238 / 308
.~ Spike-hole arrangement

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

287  DF  TIE-PLATES {16}
308.~ Spike-hole arrangement

DEFINITION

Classification: 238/308

Relative arrangement of spike-holes in tie plates.