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Class Information
Number: 4/352
Name: Baths, closets, sinks, and spittoons > Flush closet > Ventilated, i.e., noxious fume removal > Bowl > Annular ventilator
Description: Subject matter wherein the gas removing means has an intake which includes a channel subtending a portion of the cross section of the bowl in a horizontal plane and is usually located below the rim.










Patents under this class:

Patent Number Title Of Patent Date Issued
8196232 Exhaust unit for a toilet bowl Jun. 12, 2012
7730560 Odorless toilet Jun. 8, 2010
7376982 Toilet bowl venting apparatus May. 27, 2008
7331066 Ventilation system for multiple toilets in a building Feb. 19, 2008
7117548 Toilet ventilation system Oct. 10, 2006
6567994 Ventilation of toilets May. 27, 2003
6519786 Toilet splash shield system Feb. 18, 2003
6351855 Bathroom odor withdrawal system Mar. 5, 2002
6295656 Venting apparatus for flush toilets Oct. 2, 2001
6237163 Ventilated toilet seat system May. 29, 2001
6128788 Water closet and nursing bed device with same Oct. 10, 2000
5555572 Toilet bowl ventilating and deodorizing apparatus Sep. 17, 1996
5488741 Toilet bowl ventilating and deodorizing apparatus Feb. 6, 1996
5355536 Ventilated toilet seat assembly Oct. 18, 1994
5259072 Toilet ventilation assembly including fluid extraction device Nov. 9, 1993
5231705 Method and apparatus for eliminating toilet odors Aug. 3, 1993
5079783 Rechargeable self-contained deodorizing toilet seat Jan. 14, 1992
4133060 Odorless toilet Jan. 9, 1979
3953901 Toilet stool ventilating means May. 4, 1976
3942200 Odor control ventilator Mar. 9, 1976
3939506 Odor control ventilator Feb. 24, 1976











 
 
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