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Class Information
Number: 454/330
Name: Ventilation > Having inlet airway > Including specific air distributor (e.g., register, etc.) > Having register box, frame, or grating
Description: Subject matter comprising a casing, support, or grill-like exit structure for a means which releases or directs the air immediately into the ventilated space.

Sub-classes under this class:

Class Number Class Name Patents
454/331 Including specific grating or grating mounting structure 25

Patents under this class:

Patent Number Title Of Patent Date Issued
8216034 Universal air vent cover system Jul. 10, 2012
7950988 Variable volume floor diffuser with attachment means May. 31, 2011
7645189 Boot hanger mounting bracket Jan. 12, 2010
7566263 Register grille and connector frame with releasable connection Jul. 28, 2009
7390251 Air duct cover and boot Jun. 24, 2008
7328478 Register inlet apparatus for a central vacuum cleaning system Feb. 12, 2008
7258606 Modular retrofit heating, ventilating and air conditioning system Aug. 21, 2007
7022010 Air conditioner with a circular air diffuser system Apr. 4, 2006
6908115 Combined register opening cover and register boot frame Jun. 21, 2005
6666761 Wall-mounted supply-air device Dec. 23, 2003
6652375 Air-conditioning register and boot assembly Nov. 25, 2003
6251007 Transition inlet diffuser Jun. 26, 2001
6206778 Air diffuser plenum Mar. 27, 2001
RE37086 Floor register mounting frame Mar. 6, 2001
5928078 Floor register mounting frame Jul. 27, 1999
5749190 HVAC register box May. 12, 1998
5718094 Supply air register construction Feb. 17, 1998
5586932 Environmental control airhouse with variable output Dec. 24, 1996
5348078 Dwelling heating and air conditioning system Sep. 20, 1994
5338255 Air duct fitting mounting shoulder Aug. 16, 1994
5219403 Plastic self-insulating ductwork system Jun. 15, 1993
5095942 Plastic self-insulating ductwork system Mar. 17, 1992
5014610 Air outlets in air conditioning units May. 14, 1991
4876949 Low temperature air induction diffuser Oct. 31, 1989
4876952 Air-conditioning apparatus Oct. 31, 1989
4815364 Register assembly Mar. 28, 1989
4754696 Ventilator with adjustable installation means Jul. 5, 1988
4729227 Erectable sleeve Mar. 8, 1988
4672890 Lightweight load bearing register Jun. 16, 1987
4655120 Deflector skirt Apr. 7, 1987
4625632 Damper and register box Dec. 2, 1986
4555983 Apparatus for securing and sealing a packaged terminal air conditioner to a plastic wall sleeve Dec. 3, 1985
4073597 Fan housing assembly Feb. 14, 1978

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