Toilets with trapways having an air dam
trap-forming device and toilet bowl provided with such a device
Trapless water flush toilet bowl fixture
Unitary bowl, waterway and trap for a toilet, and the method of
Upwardly directed douche on a seat of a toilet bowl
Vaccum toilet system
Vacuum assist toilet trap
Vacuum assisted toilet
Vacuum assisted toilet
Vacuum assisted toilet with controlled vacuum
Vacuum flush toilet assembly
Vacuum flush valve
Vacuum gallery waste disposal system
Vacuum sewer arrangement
Vacuum sewer system
Vacuum tank construction
Vacuum tank construction
Vacuum tank construction for a vacuum toilet assembly
Vacuum tank construction for self-contained sewage handling appa
Vacuum toilet