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The ornamental design for a chair back frame, as shown and described.
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| Patent | Priority | Assignee | Title |
| D696871, | Mar 30 2012 | INTERSTUHL BUEROMOEBEL GMBH & CO KG | Chair |
| D706566, | Oct 17 2012 | Okamura Corporation | Chair |
| D707460, | Oct 17 2012 | Okamura Corporation | Chair |
| D723851, | Jun 07 2013 | MILLERKNOLL, INC | Backrest support |
| D724881, | Sep 29 2014 | Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD | Chair back frame |
| Patent | Priority | Assignee | Title |
| D576416, | Jan 02 2008 | Chair | |
| D580199, | Jul 02 2008 | Chair backrest | |
| D585205, | Mar 27 2008 | Hurng Taih Plastic Master Batch Co., Ltd. | Frame of the office chair |
| D596884, | Dec 23 2008 | Hurng Taih Plastic Master Batch Co., Ltd. | Chair back frame |
| D645683, | Jan 18 2011 | Seatback frame | |
| D648947, | Jun 17 2010 | MERRYFAIR CHAIR SYSTEM SDN BDN | Chair |
| D648966, | Jun 24 2010 | MERRYFAIR CHAIR SYSTEM SDN BHD | Back frame of chair |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 13 2011 | TSAI, HSUAN-CHIN | FUH SHYAN CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026589 | /0075 | |
| Jul 13 2011 | TSAI, HSUAN-CHIN | CHUANG, MING-TANG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026589 | /0075 | |
| Jul 14 2011 | FUH Shyan Co., Ltd. | (assignment on the face of the patent) | / | |||
| Jul 14 2011 | Ming-Tang, Chuang | (assignment on the face of the patent) | / |
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