US PATENT SUBCLASS 238 / 25
.~ Concrete

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

24  DF  STRINGERS {2}
25.~ Concrete

DEFINITION

Classification: 238/25

(under subclass 24) except that the longitudinal beams are made of concrete or plastic compounds.