73419584
Apr 1, 1983
May 9, 1989
* SECURITY * GLASS [ , ] * AND * GLASS-PLASTIC COMPOSITES [ , ] * ; * CONCRETE [ , ] AND REINFORCED CONCRETE BLOCKS FOR USE IN * THE CONSTRUCTION OF * SECURITY BARRIERS AND STRONGROOMS; PREFABRICATED STRONGROOMS; AND PREDOMINANTLY NONMETALLIC * SECURITY * DOORS, SECURITY COUNTER SCREENS [ , ] COMPRISING COUNTERTOP UNITS WITH GLASS OR GLASS-PLASTIC COMPOSITE SECURITY PANELS * , * AND * SECURITY * PARTITIONS
Nonmetallic Building Materials