Portable toilet stool having deodorizing and air-curtaining...
Portable ventilation system
Portable waste odor collection apparatus
R. V. toilet venting system
Removal of odors from toilets
Self ventilating toilet
Self-contained exhaust fan for a water closet
Self-contained toilet venting system
Sewer ventilator system for recreational vehicles, boats and the
Simple low cost means for venting a water closet
System for removing odor
System for venting noxious fumes from a toilet
Timed ventilator for toilets
Toilet air freshener
Toilet apparatus with device for deodorization
Toilet assembly having an automatic ventilation system
Toilet bowl aspirating system
Toilet bowl odor educting and powered exhaust system
Toilet bowl odor removal suction control
Toilet bowl vent system