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Class Information
Number: 55/DIG.8
Name: Gas separation > Built-in vacuum cleaners

Patents under this class:

Patent Number Title Of Patent Date Issued
8568501 Transportable field containment system with transparent hood Oct. 29, 2013
8206482 Vacuum appliance filter assemblies and associated vacuum systems Jun. 26, 2012
7566354 Bag in, bag out filter assembly Jul. 28, 2009
7485167 Shaker mechanism for vacuum cleaner filter bag Feb. 3, 2009
7168126 Central vacuum cleaner having an energy recovery ventilator system Jan. 30, 2007
7080425 Vacuum canister and mounting bracket for use therewith Jul. 25, 2006
7010829 Retractable hose central vacuum cleaning system apparatus and method Mar. 14, 2006
6508850 Clean air tent system Jan. 21, 2003
6365119 Method of operating a catalytic converter Apr. 2, 2002
5125125 Central suction cleaning installation with water flushing and double rinsing Jun. 30, 1992
4721516 Central vacuum cleaning installation with water flushing Jan. 26, 1988
4553991 Centralized suction cleaning installations Nov. 19, 1985
3942963 Vacuum cleaning system Mar. 9, 1976

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