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Class Information
Number: 4/293
Name: Baths, closets, sinks, and spittoons > Strainer, stopper, plug or closure > Closure
Description: Closures adapted to be placed over the outlet of the receptacle.

Sub-classes under this class:

Class Number Class Name Patents
4/294 Disinfecting 9

Patents under this class:

Patent Number Title Of Patent Date Issued
8539618 Drain cover for sinks Sep. 24, 2013
8528122 Drain closure device Sep. 10, 2013
8347906 Floor drain installation system Jan. 8, 2013
8230530 Protective cover for preventing spilled liquids from flowing into drains or holes Jul. 31, 2012
8117686 Durable protective cover for preventing spilled liquids from flowing into drains or holes Feb. 21, 2012
7950075 Protective cover for preventing spilled liquids from flowing into drains or holes May. 31, 2011
7887257 Drain sealing device Feb. 15, 2011
7624759 Shower drain test plug Dec. 1, 2009
7367078 Disposal plunger-brush May. 6, 2008
6966077 Apparatus for automatically operating a drain valve in a washstand Nov. 22, 2005
6691411 Method of installing a wastewater drain assembly for a bathtub Feb. 17, 2004
6601242 Flexible sink strainer and stopper Aug. 5, 2003
6530722 Drain sealing device Mar. 11, 2003
6490739 Plug for a sink drain Dec. 10, 2002
6338168 Weight core drain covering system Jan. 15, 2002
6138290 Movable fitting members for use with drain fittings Oct. 31, 2000
6092244 Locking grate device for a floor sink Jul. 25, 2000
5915847 Drain stopper with lift mechanism Jun. 29, 1999
5832544 Sink drain stopper Nov. 10, 1998
5832545 Sink drain plug Nov. 10, 1998
5758368 Waste water valves for bathtubs and the like Jun. 2, 1998
5749561 Plug assembly May. 12, 1998
5458769 Floor drain Oct. 17, 1995
4825477 Hair retriever tub drain device May. 2, 1989
4744109 Gas-sealing insert for floor drains May. 17, 1988
4671976 Web-type stock material with upwardly projecting filamentary elements and defined periphery Jun. 9, 1987
4463461 Discharge pit having a water trap Aug. 7, 1984
4423824 Closure device Jan. 3, 1984
4418432 Drain filter having filamentary surface irregularities to entangle hair and debris Dec. 6, 1983
4233697 Protective flange cover and method of use Nov. 18, 1980
4198717 Modular assembly for drain trap Apr. 22, 1980
4170047 Vaned anti-vortex pool drain cover Oct. 9, 1979
4134162 Disposable drain strainer Jan. 16, 1979

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