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Class Information
Number: D23/388
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
Description:










Sub-classes under this class:

Class Number Class Name Patents
D23/392 Adjustable louver or damper 18
D23/391 Arched or curved top 4
D23/389 Baseboard type 24
D23/390 Circular 22


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
D701952 Grille Apr. 1, 2014
D678995 Grille Mar. 26, 2013
D664249 Flow blocker plate Jul. 24, 2012
D656602 Flow regulator Mar. 27, 2012
D655403 Grille Mar. 6, 2012
D638925 Louvered ventilation grille May. 31, 2011
D638116 Panel with anti-reflective ridges for use in air sterilization apparatus May. 17, 2011
D636482 Diffuser Apr. 19, 2011
D636069 Diffuser Apr. 12, 2011
D635238 Ventilation grille Mar. 29, 2011
D629883 Air outlet Dec. 28, 2010
7794313 Air register cover assembly Sep. 14, 2010
D621924 Combustion air vent with flat top and bottom retainers and beveled edge Aug. 17, 2010
D621499 Air outlet Aug. 10, 2010
D619699 Air outlet Jul. 13, 2010
D618783 Air outlet Jun. 29, 2010
D618332 Air outlet Jun. 22, 2010
D616976 Combustion air vent with top and bottom retainers Jun. 1, 2010
D616975 Combustion air vent with side retainers Jun. 1, 2010
D609328 Air register Feb. 2, 2010
D609326 Air register Feb. 2, 2010
D609327 Air register Feb. 2, 2010
7651390 Ceiling vent air diverter Jan. 26, 2010
D608439 Air register Jan. 19, 2010
D608438 Air register Jan. 19, 2010
7645188 Air diffuser apparatus Jan. 12, 2010
7635298 Air deflector Dec. 22, 2009
D605281 Louvered vent Dec. 1, 2009
D599465 Vent cover Sep. 1, 2009
D597653 Vent cover Aug. 4, 2009
D595811 Frictionally engaged flat flow regulatory attachment Jul. 7, 2009
D595832 Register booster Jul. 7, 2009
D593673 Air louver Jun. 2, 2009
D591844 Ventilation register May. 5, 2009
D589605 Air inlet grille Mar. 31, 2009
D588257 Air inlet grille Mar. 10, 2009
D581510 Wiring closet ventilation unit Nov. 25, 2008
D581487 Flat flow regulator Nov. 25, 2008
D569492 Ventilation grille May. 20, 2008
D568460 Ventilation grille May. 6, 2008
D567932 Ventilation grille Apr. 29, 2008
D567931 Ventilation grille Apr. 29, 2008
D567933 Ventilation grille Apr. 29, 2008
D567353 Ventilation grille Apr. 22, 2008
D567352 Ventilation grille Apr. 22, 2008
D567355 Ventilation grille Apr. 22, 2008
D567354 Ventilation grille Apr. 22, 2008
D566261 Air diffuser Apr. 8, 2008
D566262 Ventilation grille Apr. 8, 2008
D565722 Ventilation grille Apr. 1, 2008

1 2 3










 
 
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