Back pack frame

The ornamental design for a back pack frame, substantially as shown.

FIG. 1 is a perspective view of a back pack frame embodying my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view; and

FIG. 5 is a right side elevational view.

Patent	Priority	Assignee	Title
D311094,	Dec 23 1987	American Recreation Products, Inc.	Backpack frame
D744231,	Apr 14 2014	Nathanial Brent, Erdmann	Adjustable pack frame

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Jun 16 1976		Kellwood Company	(assignment on the face of the patent)
Sep 30 1985	KELLWOOD COMPANY, A CORP OF DE	AMERICAN RECREATION PRODUCTS, INC , 611 INDUSTRIAL ROAD, NEW HAVEN, MISSOURI, A CORP OF DELAWARE	ASSIGNMENT OF ASSIGNORS INTEREST	004478	0889	pdf

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