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The ornamental design for an armchair, as shown and described.
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| Patent | Priority | Assignee | Title |
| D698162, | Jan 15 2013 | CINNA | Seat |
| D702451, | Jan 28 2013 | FRITZ HANSEN A S | Chair |
| D709711, | Apr 09 2013 | B&B ITALIA S P A | Armchair |
| D765434, | Feb 26 2015 | TOM DIXON LIMITED | Wingback chair |
| D765998, | Oct 29 2015 | TOM DIXON LIMITED | Balloon back chair |
| D773843, | Feb 26 2015 | TOM DIXON LIMITED | Wingback sofa |
| D800472, | May 13 2016 | Vitra AG | Chair |
| D801066, | May 13 2016 | Vitra AG | Chair |
| D801067, | May 13 2016 | Vitra AG | Chair |
| D801717, | May 13 2016 | Vitra AG | Chair |
| D801718, | May 13 2016 | Vitra AG | Chair |
| D802314, | May 13 2016 | Vitra AG | Chair |
| D834359, | Mar 22 2018 | Chair seat | |
| D878784, | Sep 26 2017 | Okamura Corporation | Chair |
| D879490, | Dec 11 2017 | Okamura Corporation | Chair |
| D885792, | May 27 2017 | Chengdu YiShouWeiSheng Technology Co., Ltd | Back and head cushion |
| D888455, | Jun 10 2019 | Hang Zhou Hengfeng Furniture Limited Company | Chair |
| D889873, | Jan 17 2019 | KARTELL S.p.A. | Chair |
| D897749, | Sep 26 2017 | Okamura Corporation | Chair |
| D897750, | Sep 26 2017 | Okamura Corporation | Chair |
| D907422, | Oct 02 2017 | Okamura Corporation | Chair |
| D918610, | Aug 22 2018 | Grammer AG | Bus seat |
| D942765, | Aug 22 2018 | Grammer AG | Train seat |
| D946295, | Mar 30 2020 | Chair | |
| D946296, | Mar 09 2020 | ARPER S P A | Armchair |
| D984150, | Dec 05 2022 | Rocking chair | |
| ER321, | |||
| ER5083, | |||
| ER7752, | |||
| ER7899, | |||
| ER8315, | |||
| ER9106, |
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| 20050127740, | |||
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| D468917, | May 12 1999 | Aviointeriors, SpA | Chairs for aircrafts |
| D577922, | Dec 20 2007 | ALSTOM TRANSPORT TECHNOLOGIES | Chair |
| D611263, | Jan 16 2009 | CINNA | Seat |
| D654713, | Apr 13 2010 | PEARSON LLOYD DESIGN LTD | Patient chair |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 26 2011 | CITTERIO, ANTONIO | Vitra Patente AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 029445 | /0439 | |
| Dec 07 2012 | Vitra Patente AG | (assignment on the face of the patent) | / | |||
| May 19 2021 | Vitra Patente AG | Vitra AG | MERGER AND CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 058892 | /0493 | |
| May 19 2021 | Vitra AG | Vitra AG | MERGER AND CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 058892 | /0493 |
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