Portable tray table for use primarily on a boat

The ornamental design for a portable tray table for use primarily on a boat, as shown.

FIG. 1 is a top view of the portable tray table;

FIG. 2 is a side view of the portable tray table;

FIG. 3 is a bottom view of the portable tray table; and,

FIG. 4 is an end view of the portable tray table; and

FIG. 5 is a perspective view of the portable tray table.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Sep 20 1979		Nautical Engineering Division of R & D Enterprises	(assignment on the face of the patent)

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