SPENCER

[ STATIONARY AND PORTABLE VACUUM CLEANING APPARATUS FOR INDUSTRIAL, COMMERCIAL, AND DOMESTIC USE; CARPET TOOLS, FLOOR TOOLS, WALL TOOLS, HAND TOOLS, HANDLES FOR SAID TOOLS, ELBOW JOINTS,] VALVES, HOSES, HOSE ADAPTERS, HOSE CONNECTORS AND OTHER ACCESSORIES FOR USE WITH SAID VACUUM CLEANING APPARATUS; MATERIAL SEPARATORS; CENTRIFUGAL VACUUM PRODUCERS, CENTRIFUGAL COMPRESSORS AND BLOWERS [, AND ORGAN BLOWERS]