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Patent
D917217
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Priority
Nov 29 2019
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Filed
Nov 29 2019
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Issued
Apr 27 2021
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Expiry
Apr 27 2036
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Assg.orig
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Entity
unknown
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5
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14
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n/a
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The ornamental design for a chair back frame, as shown and described.
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FIG. 1 is a perspective view of a chair back frame, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Tsai, Hsuan-Chin
| Patent |
Priority |
Assignee |
Title |
| 20170027328, |
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| CA2895942, |
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| D540578, |
Sep 09 2005 |
|
Backrest |
| D645683, |
Jan 18 2011 |
|
Seatback frame |
| D687660, |
Jun 05 2012 |
Zhongshan Shi Songlin Furniture Co., Ltd; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD |
Chair back frame |
| D714069, |
Nov 19 2013 |
|
Mesh back task chair |
| D745300, |
Nov 19 2013 |
|
Mesh back task chair back and bottom |
| D772592, |
Nov 01 2015 |
|
Chair backrest |
| D780499, |
Jun 18 2015 |
Zhongshan Shi Songlin Furniture Co., Ltd. |
Chair back frame |
| D793142, |
May 31 2016 |
Zhongshan Shi Songlin Furniture Co., Ltd. |
Chair back frame |
| D793143, |
May 31 2016 |
Zhongshan Shi Songlin Furniture Co., Ltd |
Chair back frame |
| D818294, |
Mar 07 2016 |
Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD |
Chair back frame |
| D839035, |
Nov 27 2017 |
|
Chair back frame |
| D875453, |
Jan 26 2018 |
|
Chair frame |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a