Panel structure

The ornamental design for a panel structure, substantially as shown.

FIG. 1 is a perspective view of the front of a panel structure embodying my design;

FIG. 2 is a perspective view of the back of the panel structure shown in FIG. 1; and

FIG. 3 is a fragmentary plan view showing the upper right corner of the panel structure shown in FIGS. 1 and 2.

Patent	Priority	Assignee	Title
D915637,	Jul 18 2017		Panel for ceiling

Patent	Priority	Assignee	Title
3127960,
3818655,
4038796,	Dec 23 1975	Eckel Industries, Inc.	Wall panel assembly
4106255,	Sep 06 1977	Eckel Industries, Inc.	Wall panel assemblies
4201026,	Oct 02 1978	CHRISTOPHER, RALPH; CHRISTOPHER, BRUCE	Structural member

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Apr 02 1980		AB Svenska Flaktfabriken	(assignment on the face of the patent)
Mar 29 1982	SVENSSON, GUNNAR	AB SVENSKA FLAKTFABRIKEN, A JOINT STOCK COMPANY OF SWEDEN	ASSIGNMENT OF ASSIGNORS INTEREST	003961	0615	pdf

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