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Publication numberUSD650617 S1
Publication typeGrant
Application numberUS 29/357,921
Publication dateDec 20, 2011
Priority dateMar 19, 2010
Publication number29357921, 357921, US D650617 S1, US D650617S1, US-S1-D650617, USD650617 S1, USD650617S1
InventorsYucheng Chen
Original AssigneeYucheng Chen
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Main frame of chairs
US D650617 S1
Abstract  available in
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  1. The ornamental design for main frame of chairs, as shown and described.

FIG. 1 is the front elevational view of main frame of chairs;

FIG. 2 is the rear elevational view thereof;

FIG. 3 is the right side elevational view thereof;

FIG. 4 is the left side elevational view thereof;

FIG. 5 is the top plan view thereof;

FIG. 6 is the bottom plan view thereof; and,

FIG. 7 is the main view thereof.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
USD665590 *Aug 21, 2012Topstar GmbhChair
USD683151May 28, 2013Steelcase Inc.Chair
USD689313Feb 19, 2013Sep 10, 2013Steelcase Inc.Chair
USD689319Feb 19, 2013Sep 10, 2013Steelcase Inc.Chair
USD690146Feb 19, 2013Sep 24, 2013Steelcase Inc.Chair
USD690547Feb 19, 2013Oct 1, 2013Steelcase Inc.Chair
USD697730Sep 20, 2012Jan 21, 2014Steelcase Inc.Chair
USD698165Sep 20, 2012Jan 28, 2014Steelcase Inc.Chair
USD699958Sep 20, 2012Feb 25, 2014Steelcase Inc.Chair
USD750911 *Sep 12, 2014Mar 8, 2016Dongguan Kentec Office Seating Co., Ltd.Office chair
USD755532 *Sep 12, 2014May 10, 2016Dongguan Kentec Office Seating Co., Ltd.Office chair
USD758774Apr 24, 2015Jun 14, 2016Steelcase Inc.Headrest assembly
USD759415Apr 24, 2015Jun 21, 2016Steelcase Inc.Headrest
USD760526Apr 24, 2015Jul 5, 2016Steelcase Inc.Headrest assembly
U.S. ClassificationD06/716, D06/366