Patent
   D917218
Priority
Jan 21 2020
Filed
Jan 21 2020
Issued
Apr 27 2021
Expiry
Apr 27 2036
Assg.orig
Entity
unknown
4
15
n/a
The ornamental design for a chair back frame, as shown and described.

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
D947574, Aug 20 2018 COOLSIDE LIMITED Internal assembly for travel accessory
D957839, Apr 25 2019 Chair backrest
D957846, Aug 20 2018 COOLSIDE LIMITED Travel accessory
ER1693,
Patent Priority Assignee Title
10827841, Sep 24 2019 Zhongshan Shi Songlin Furniture Co., Ltd Chair waist backrest height adjusting device
20170027328,
CA2895942,
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
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Jan 20 2020TSAI, HSUAN-CHINZHONGSHAN SHI SONGLIN FURNITURE CO , LTDASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0515650818 pdf
Jan 21 2020Zhongshan Shi Songlin Furniture Co., Ltd.(assignment on the face of the patent)
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