Chair frame

The ornamental design for a chair frame, substantially as shown.

FIG. 1 is a front perspective view of a chair frame showing my new design;

FIG. 2 is a rear perspective view;

FIG. 3 is a side perspective view; and

FIG. 4 is a top perspective view.

Patent	Priority	Assignee	Title
D372594,	Jul 25 1995		Dining room chair
D400016,	Nov 04 1997	National Upholstering Company	Dining side chair
D402126,	Nov 04 1997	BAUER INC	Bar stool
D470668,	Jun 01 2002		Chair with a surfboard-shaped back support

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