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US6055699AMay 2, 2000
Cleaning tool head with multi-filament seal
CFR CORP27 citations91
US5839155ANov 24, 1998
Continuous flow cleaning system with ozone injection
CFR CORP55 citations91
US5555598ASep 17, 1996
Cleaning tool head with overlapping and offset fluid spray patterns
CFR CORP42 citations91
US5589080ADec 31, 1996
Liquid recycling system with moving concentrated counterflow for filter clearance
CFR CORP52 citations89
US5432975AJul 18, 1995
Self-contained continuous flow recycling apparatus
CFR CORP23 citations84
US6076229AJun 20, 2000
Aqueous cleaning solutions incorporating ozone-resistant surfactants with low foam characteristics
CFR CORP17 citations77
US5151181ASep 29, 1992
Filter system for wet vacuum cleaning apparatus
CFR CORP13 citations68
US5114574AMay 19, 1992
Backflush filter system with insert member diffusing filtering and backflush flow
CFR CORP18 citations68
US5077823ADec 31, 1991
Electric motor starting circuit
CFR CORP12 citations67