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Patent
D724880
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Priority
Sep 29 2014
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Filed
Sep 29 2014
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Issued
Mar 24 2015
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Expiry
Mar 24 2029
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Assg.orig
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Entity
unknown
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4
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8
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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 |
D536557, |
May 24 2005 |
|
Mesh chair back |
D548992, |
Mar 24 2006 |
HNI Corporation |
Chair |
D552857, |
Mar 08 2007 |
|
Chair |
D553378, |
Mar 08 2007 |
|
Chair |
D558994, |
Mar 24 2006 |
HNI Corporation |
Chair |
D669286, |
Feb 01 2012 |
Oasyschair Co., Ltd. |
Backrest holder for a chair |
D706068, |
Sep 26 2013 |
Zhongshan Shi Songlin Furniture Co., Ltd.; ZHONGSHAN SHI SONGLIN FURNITURE CO , LTD |
Chair back frame |
D718066, |
Aug 01 2013 |
Manufacturas Munoz S.A.S.—MUMA S.A.S. |
Ergonomic chair |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a