75591675
Nov 19, 1998
Mar 25, 2003
OPEN-WEB TRUSSES AND OPEN-WEB JOISTS FOR USE IN CONSTRUCTION OF FLOORS, CEILINGS AND ROOFS IN RESIDENTIAL AND LIGHT COMMERCIAL BUILDINGS, THE LENGTH OF WHICH MAY BE CUT ON THE JOB SITE, AND MARKETED AND SOLD SUBSTANTIALLY EXCLUSIVELY TO THE TRADE
Nonmetallic Building Materials