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Class Information
Number: 4/471
Name: Baths, closets, sinks, and spittoons > Dry closets > Valved bowl
Description: Subject matter wherein there is a movable element stopping means which, when open, allows the bowel material to pass through.

Sub-classes under this class:

Class Number Class Name Patents
4/473 Seat, lid or covering operated 3
4/472 Ventilated 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8627518 Portable toilet Jan. 14, 2014
6802085 Method and apparatus for disposing of waste Oct. 12, 2004
6101638 Toilet utilizing air pressure, grinding and heat to produce a dry powder waste Aug. 15, 2000
6101641 Waste removal method for dry toilets Aug. 15, 2000
6003162 Waste disposal apparatus Dec. 21, 1999
5901385 Dry type toilet system May. 11, 1999
5293651 Toilet seat Mar. 15, 1994
5193231 Lavatory having a dispenser for excrement bags and control and excrement bag for this purpose Mar. 16, 1993
4785483 Integrated passenger seat and toilet apparatus and method Nov. 22, 1988
4713848 Hygienic wheelchair seat for extended use Dec. 22, 1987
4439875 Toilet Apr. 3, 1984
4059124 Valved stopper for a urine bottle Nov. 22, 1977
3943578 Method and apparatus for deodorizing the dipping up system of a lavatory Mar. 16, 1976

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