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Class Information
Number: D23/357
Name: Environmental heating and cooling; fluid handling and sanitary equipment > Heating or cooling > Air treatment > Humidifier > Wall or furnace mount
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
D458356 Furnace mounted humidifier Jun. 4, 2002
D342989 Humidifier Jan. 4, 1994
D322122 Humidifier casing Dec. 3, 1991
D320072 Humidifier Sep. 17, 1991
D280660 Humidifier Sep. 17, 1985
D265852 Room humidifier Aug. 17, 1982
D261422 Humidifier for a hot air furnace or the like Oct. 20, 1981
D261421 Humidifier for a hot air furnace or the like Oct. 20, 1981
D259207 Facial sauna housing May. 12, 1981
D255927 Room humidifier Jul. 15, 1980
D253846 By-pass humidifier Jan. 1, 1980
D253845 By-pass humidifier Jan. 1, 1980
4003967 Electric heating and humidifying apparatus Jan. 18, 1977











 
 
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