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Class Information
Number: 4/472
Name: Baths, closets, sinks, and spittoons > Dry closets > Valved bowl > Ventilated
Description: Subject matter including means for removing gases having a disagreeable odor.

Patents under this class:

Patent Number Title Of Patent Date Issued
6977005 Waterless vacuum toilet system for aircraft Dec. 20, 2005
4944045 Condition-specific toilet ventilation system Jul. 31, 1990
4254515 Compost-type toilet equipment Mar. 10, 1981
4196477 Evaporative toilet Apr. 8, 1980

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