71581867
Jul 13, 1949
Mar 27, 1951
RAILWAY VEHICLE EQUIPMENT-NAMELY, BRAKE BEAMS AND PARTS THEREOF AND BRAKE BEAM HEADS; BRAKE BEAM GUARDS, GUIDES, AND SUPPORTS AND PARTS THEREOF; TRUCK AND BODY SIDE BEARINGS; BRAKE BEAM BOTTOM ROD GUARDS; AND BRAKE BEAM CONNECTORS
Nonmetallic Building Materials