Metal connectors and metal joinery fittings for use with non-metal ducts, not electrical circuits

Metal connectors and metal joinery fittings for use with non-metal ducts, not electrical circuits

COMPUTER HARDWARE, NAMELY DATA PROCESSING EQUIPMENT,[ COMPUTERS, AND COMPUTER PERIPHERAL EQUIPMENT, NAMELY COMPUTER PRINTERS, COMPUTER KEYBOARDS, MONITORS, MICE, CD-ROM DRIVES, MODEMS, AS WELL AS PARTS OF THE AFOREMENTIONED GOODS; COMPUTER SOFTWARE, NAMELY PROGRAMS FOR ELECTRONIC DATA PROCESSING AND DATA BASES IN THE FIELD OF ELECTRONIC COMMERCE AND AUTOMATIC VENDING MACHINES; MACHINE READABLE DATA CARRIERS, NAMELY COMPUTER STORAGE CARTRIDGES AND DISCS, COMPUTER DISKETTES, CD-ROMS, FLOPPY DIS...