73763344
Nov 14, 1988
Jul 9, 1991
CENTRAL VACUUM CLEANING SYSTEMS AND PARTS THEREOF, NAMELY, POWER UNITS, WALL VALVES, WALL BRACKETS, MOUNTINGS, FACE PLATES AND FITTINGS, PLASTIC PIPES, JOINTS AND ELBOWS, ATTACHMENTS, HOSES AND TOOLS, AND TOOL CADDIES
Electrical and Scientific Apparatus