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Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US405036411 Feb 197627 Sep 1977Gretsch-Unitas GmbH BaubeschlagfabrikVentilating device
US448896129 Sep 198218 Dic 1984E. I. Du Pont de Nemours and CompanyOne-way filter unit
US462563027 Ago 19842 Dic 1986North American Agricultural, Inc.Roof vent and method of making same
US478152629 Oct 19871 Nov 1988Fan and filter combination
US512792725 Sep 19917 Jul 1992Environet, Inc.Flow filter device
US52540331 Sep 199219 Oct 1993General Motors CorporationAutomatically released air inlet filter
US566060518 Sep 199526 Ago 1997Holmes Products Corp.Window fan
US573591819 Nov 19967 Abr 1998Combination air freshener and air filter
US62004656 Ago 199913 Mar 2001Dana CorporationFilter with integral lift tab
US626472720 Jul 199924 Jul 2001Filter fan
US63871649 Sep 199914 May 2002Airwave PTE LTDHousing for electronic air cleaner
US642594517 Ene 200230 Jul 2002Airwave Pte Ltd.Housing for electronic air cleaner
US652783813 Jul 20014 Mar 2003Indoor fan filter
US687420924 Feb 20035 Abr 2005Indoor fan filter
US741051829 Dic 200412 Ago 20083M Innovative Properties CompanyFilter removal devices
US767039719 Dic 20062 Mar 2010M+W Zander Products GmbHFilter-fan unit
US76704011 Feb 20062 Mar 2010Zipwall, LLCFilter mounts for a portable fan and methods for mounting a filter to a portable fan
US790593821 Ene 201015 Mar 2011Zipwall, LLCFilter mounts for a portable fan and methods for mounting a filter to a portable fan
US79724015 Jun 20065 Jul 2011Ingersoll-Rand CompanyAir intake filter assembly
US81374268 Feb 201120 Mar 2012Zipwall, LLCFilter mounts for a portable fan and methods for mounting a filter to a portable fan
US817291921 Jul 20098 May 2012Window filter apparatus
USD31071328 Abr 198818 Sep 1990Tech Paper, Inc.Fan housing with filter compartment