The ornamental design for a portable seatdevice for canoes, as shown and described.
FIG. 1 is a perspective view of a portable seat device for canoes showing my new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is side view thereof; opposite side view is a mirror image thereof;
FIG. 6 is a front view thereof; opposite back view is a mirror image thereof; and,
FIG. 7 is an in-use perspective view thereof.
In FIG. 7, the broken lines showing the environmental structure for purposes of illustrating the portable seat device for canoes in a condition of use. The broken lines and the structure they depict form no part of the claimed design.
The broken away symbols in the drawings indicate the appearance of any portion of the article between the break lines forms no part of the claimed design.