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US2372860A
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*
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1939-12-07 |
1945-04-03 |
Hoover Co |
Suction cleaner
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US2594458A
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*
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1948-03-31 |
1952-04-29 |
Hoover Co |
Filter attachment for suction cleaners
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SE372415B
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*
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1972-09-22 |
1974-12-23 |
Electrolux Ab |
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USD333891S
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*
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1990-07-11 |
1993-03-09 |
Black & Decker Inc. |
Filter for a vacuum cleaner
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US5192344A
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1991-09-10 |
1993-03-09 |
Andre E. Thorn Bacon |
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USD417268S
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1996-04-26 |
1999-11-30 |
Donaldson Company, Inc. |
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USD400323S
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1996-08-19 |
1998-10-27 |
W. L. Gore & Associates, Inc. |
Filter for a wet/dry vacuum cleaner
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USD437402S1
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1999-11-05 |
2001-02-06 |
Donaldson Company, Inc. |
Filter element with centerpiece
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2002-11-22 |
2004-10-12 |
Donaldson Company, Inc. |
Filter for engine
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USD484584S1
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2003-01-22 |
2003-12-30 |
Donaldson Company, Inc. |
Filter element for engine
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2003-06-05 |
2006-11-14 |
Baldinger Russell L |
Dirt cup filter with pre-filtration cap
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USD495105S1
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2003-06-05 |
2004-08-24 |
Russell L. Baldinger |
Filter cup assembly for a vacuum cleaner
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USD506539S1
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2004-03-24 |
2005-06-21 |
Donaldson Company, Inc. |
Filter cartridge
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USD541399S1
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2005-09-08 |
2007-04-24 |
Royal Appliance Mfg. Co. |
Filter assembly
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USD521137S1
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2005-01-14 |
2006-05-16 |
Royal Appliance Mfg. Co. |
Filter
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USD520127S1
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2005-01-14 |
2006-05-02 |
Royal Appliance Mfg. Co. |
Filter assembly
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2005-02-10 |
2010-02-02 |
Euro-Pro Operating, Llc |
Filter assembly for a vacuum cleaner
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2005-11-23 |
2008-05-20 |
Emerson Electric Co. |
Filter and system for improved sealing on a vacuum cleaner
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2005-11-23 |
2008-05-20 |
Emerson Electric Co. |
Filter and system for improved sealing and ease of attachment on a vacuum cleaner
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ATE514367T1
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2007-04-04 |
2011-07-15 |
Black & Decker Inc |
Filterreinigungsmechanismen
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CA126037S
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2007-11-23 |
2009-01-22 |
Dyson Ltd |
Rolling support for a vacuum cleaner
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USD601320S1
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2008-10-01 |
2009-09-29 |
Emerson Electric Co. |
Filter for a wet/dry vacuum cleaner
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2009-04-01 |
2012-06-05 |
Wix Filtration Corp Llc |
Filter structure
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USD706831S1
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2011-02-11 |
2014-06-10 |
Briggs & Stratton Corporation |
Air filter
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USD711608S1
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2013-05-14 |
2014-08-19 |
Erin Claire O'Shaughnessy |
Vacuum attachment for collecting small particles
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2013-09-04 |
2017-11-28 |
Mann+Hummel Gmbh |
Air filter element
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2014-03-04 |
2017-01-24 |
Vincent James Madonia |
Apparatus and system for cleaning a filter
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2015-11-20 |
2017-05-16 |
Baldwin Filters, Inc. |
Filter element
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2015-11-20 |
2017-10-03 |
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2016-12-28 |
2019-11-05 |
Omachron Intellectual Property Inc. |
Dust and allergen control for surface cleaning apparatus
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2017-04-07 |
2019-06-25 |
Champion Laboratories, Inc. |
Filter
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2017-10-06 |
2021-03-23 |
Kohler Co. |
Air cleaner filter
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2018-12-10 |
2021-03-23 |
Dyson Technology Limited |
Filter for vacuum cleaners
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GB2581969A
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2019-03-04 |
2020-09-09 |
Numatic Int Ltd |
Collapsible filter cartridge
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2019-04-25 |
2021-04-14 |
Sprintus GmbH |
Filterelement
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2020-07-05 |
2022-03-22 |
Champion Laboratories, Inc. |
Filter frame
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