Chair base

The ornamental design for a chair base, as shown and described.

FIG. 1 is a top perspective view of a chair base showing my new design;

FIG. 2 is a section of one of the five arms radiating from the central core; and,

FIG. 3 is a partial front elevational view.

Patent	Priority	Assignee	Title
D578326,	Oct 24 2007	Donati S.p.A.	Seat mechanism
D584907,	Jul 03 2007	True Seating Concepts, LLC	Chair base
D586159,	Aug 08 2007	Jia Xie Enterprise Co., Ltd.	Chair leg
D644455,	May 03 2010	Steelcase Inc	Table
D644457,	May 03 2010	Steelcase Inc	Table
D647733,	Feb 02 2010	Donati S.p.A.	Seat mechanism
D647734,	Feb 02 2010	Donati S.p.A.	Seat mechanism
D648553,	May 03 2010	Steelcase Inc	Chair
D648946,	May 03 2010	Steelcase Inc	Chair
D653480,	Jul 27 2010		Leg swivel of a swivel chair
D654712,	May 03 2010	Steelcase Inc	Chair
D657582,	May 03 2010	Steelcase Inc.	Chair
D657583,	May 03 2010	Steelcase Inc.	Chair
D664371,	May 13 2011	Steelcase Inc	Ottoman
D665603,	Dec 21 2009		Office chair base
D800469,	May 13 2016	Vitra AG	Chair
D800470,	May 13 2016	Vitra AG	Chair
D800471,	May 13 2016	Vitra AG	Chair
D800472,	May 13 2016	Vitra AG	Chair
D801066,	May 13 2016	Vitra AG	Chair
D801067,	May 13 2016	Vitra AG	Chair
D801068,	May 13 2016	Vitra AG	Chair
D801717,	May 13 2016	Vitra AG	Chair
D801718,	May 13 2016	Vitra AG	Chair
D801719,	May 13 2016	Vitra AG	Chair
D802314,	May 13 2016	Vitra AG	Chair
D802315,	May 13 2016	Vitra AG	Chair
D802316,	May 13 2016	Vitra AG	Chair
D805334,	May 13 2015	Okamura Corporation	Table
D805335,	May 13 2015	Okamura Corporation	Table
D859045,	Oct 24 2016	SITLAND S P A	Chair base
D918633,	May 07 2019	DONATI S P A	Base for office chairs
D967661,	Mar 30 2022		Office chair base
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ER981,

Patent	Priority	Assignee	Title
D366377,	Mar 17 1994	LEGGETT & PLATT CANADA CO SOCIETE LEGGETT & PLATT CANADA	Base for an office chair
D467452,	Jan 25 2002	U-CHIN FURNITURE CO , LTD	Chair leg
D471039,	Feb 07 2002		Chair base
D472079,	Feb 07 2002		Chair base
D482217,	Dec 12 2002		Chair base
D494387,	Oct 24 2003	Gruga, U.S.A.	Chair base
D494787,	Oct 15 2003		Base stand for a seat
D499586,	Oct 15 2003		Base stand for a seat
D507436,	Jan 02 2003	Hsin Chernq Enterprise Co., Ltd.	Chair base

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Oct 07 2005	DONATI, ARMANDO	DONATI S P A	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	017118	0385	pdf
Oct 18 2005		Donati S.p.A.	(assignment on the face of the patent)

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