SCRUBBER
AEG
ADVANCE ACOUSTIC
ALTO
AMERICAN-LINCOLN
AXMINSTER
BETCO
BARLOWORLD SCIENTIFIC
CDA
COMAC
CENTURY
CENTURY 400
CLARKE
CLEMAS & CO
CYPRESS
DIRT DEVIL
DUSTBANE
ELECTROLUX
ENVIROVENT
GRACO
HP (HEWLETT-PACKARD)
HOOVER
LIVINGTON
MTD
MASTERCRAFT
MICHCO
MINUTEMAN
NILFISK
POWR-FLITE
PROCHEM
PULLMAN HOLT
RPS CORPORATION
SIEMENS
VIPER
WINDSOR
YAMAHA