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Patent
D725951
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Priority
Feb 20 2014
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Filed
Feb 20 2014
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Issued
Apr 07 2015
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Expiry
Apr 07 2029
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Assg.orig
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Entity
unknown
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4
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7
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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
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