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Class Information
Number: 454/345
Name: Ventilation > Having outlet airway > With air pump > Having plural suction intakes
Description: Subject matter in which the air is withdrawn from multiple spaced apart locations within the ventilated space.

Patents under this class:

Patent Number Title Of Patent Date Issued
8397527 Energy saving integrated lighting and HVAC system Mar. 19, 2013
7766734 Method and apparatus for passively controlling airflow Aug. 3, 2010
7559832 Wood stove radon reduction system Jul. 14, 2009
7001265 Air exhaust system Feb. 21, 2006
6814661 Air extraction fan Nov. 9, 2004
6786815 Apparatus for venting rooms with exhaust fans Sep. 7, 2004
6450881 Room ventilator inlet Sep. 17, 2002
6203422 Light activated exhaust fan Mar. 20, 2001
5795219 Nail polishing workstation with ventilation and carousel tray Aug. 18, 1998
5788565 Smoke exhausting device Aug. 4, 1998
5775987 Smoke removing device and method Jul. 7, 1998
5720661 Inversion type ventilating fan Feb. 24, 1998
5514037 Modular passive smoke ventilation system May. 7, 1996
5499945 Ventilation apparatus providing air extraction adjacent selected workstations in a confined space Mar. 19, 1996
5464370 Device for changing a fluid passage Nov. 7, 1995
5403234 Radon gas evaluation system and method Apr. 4, 1995
5322470 Ventilation apparatus Jun. 21, 1994
5101712 Sub-slab depressurization radon reduction method and apparatus Apr. 7, 1992
5083500 Radon treatment system and method Jan. 28, 1992
5067394 Airborne particle exhaust system Nov. 26, 1991
5018319 Pneumatic tube selector mechanism May. 28, 1991
4939986 Exhaust ventilator Jul. 10, 1990
4938124 Substructure radon gas evacuation system Jul. 3, 1990
4926293 Lighting and air freshener fixture May. 15, 1990
4902315 Negative pressure asbestos removal with localized make-up air Feb. 20, 1990
4787298 Method and apparatus to consolidate room and point exhaust with a single fan Nov. 29, 1988
4759272 Ventilator Jul. 26, 1988
4742765 Power roof ventilator May. 10, 1988
4352322 Prefabricated vehicle maintenance apparatus Oct. 5, 1982
4109144 Dust collection and illumination system Aug. 22, 1978
4051770 Ventilators for mobile homes, and the like Oct. 4, 1977
3990356 Method of and apparatus for controlling the inlet openings of central ventilation installations Nov. 9, 1976

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