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Class Information
Number: D23/390
Name: Environmental heating and cooling; fluid handling and sanitary equipment > Heating or cooling > Element or attachment, not elsewhere specified > Flow director (29) > Register or diffuser > Circular

Patents under this class:

Patent Number Title Of Patent Date Issued
D681796 Air directing apparatus May. 7, 2013
D563542 Vent intake Mar. 4, 2008
D549815 Air flow directing fixture for heating, air conditioning and ventilation devices Aug. 28, 2007
D547432 Air vent Jul. 24, 2007
D527812 Deflection register for air conditioning system device Sep. 5, 2006
D524600 Convection cover for cooking appliance Jul. 11, 2006
D524435 Air flow reducer disk Jul. 4, 2006
D502990 Airflow screen Mar. 15, 2005
D468008 Instrument panel register Dec. 31, 2002
D427303 Deflection register for air conditioning system device Jun. 27, 2000
D399939 Supply air device Oct. 20, 1998
D398975 Supply air device Sep. 29, 1998
D393709 Air duct Apr. 21, 1998
D389235 Window fan Jan. 13, 1998
D370723 Louver Jun. 11, 1996
D338266 Air distributor for a percussive fluid-activated apparatus Aug. 10, 1993
D338265 Air diffuser Aug. 10, 1993
D328875 Infrared detector mirror Aug. 25, 1992
D317819 Air diffuser Jun. 25, 1991
4576331 Booster fan and air deflector for floor vents Mar. 18, 1986
D281273 Self-closing ventilation louver Nov. 5, 1985
D281194 Self-closing ventilation louver Oct. 29, 1985

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