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Class Information
Number: 454/328
Name: Ventilation > Having inlet airway > Including specific air distributor (e.g., register, etc.) > With means for liquid contact
Description: Subject matter comprising means for directly exposing the air to water or another liquid.

Patents under this class:

Patent Number Title Of Patent Date Issued
8079898 Air cooling system for a building structure Dec. 20, 2011
6712690 Portable ventilating system Mar. 30, 2004
6494778 Aroma dispensing unit in a HVAC system of an automobile Dec. 17, 2002
6386971 Air freshener holding device May. 14, 2002
6319117 Scent dispenser Nov. 20, 2001
6257976 Cover for an air register Jul. 10, 2001
5957771 Aromatic spray driving apparatus of air conditioner Sep. 28, 1999
5599485 Portable humidifier assembly Feb. 4, 1997
5346428 Wall mounted forced air vent humidifier and draft control device Sep. 13, 1994
5324230 Portable room humidifier Jun. 28, 1994
5279520 Ceiling mounted forced air vent humidifier and draft control device Jan. 18, 1994
5146762 Evaporative cooling system for buildings Sep. 15, 1992
4970876 Evaporative cooler Nov. 20, 1990
4654198 Dynamic air deflector Mar. 31, 1987
RE31675 Humidifier Sep. 18, 1984
4307656 Room humidifier Dec. 29, 1981
4226174 Humidifier Oct. 7, 1980
4192385 Fire fighting apparatus Mar. 11, 1980
4189990 False ceiling Feb. 26, 1980
4031180 Cooling pad system Jun. 21, 1977
3957932 Humidifier May. 18, 1976

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