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Patent
D917218
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Priority
Jan 21 2020
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Filed
Jan 21 2020
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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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4
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15
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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 |
10827841, |
Sep 24 2019 |
Zhongshan Shi Songlin Furniture Co., Ltd |
Chair waist backrest height adjusting device |
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