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The ornamental design of a septic tank cover, as shown and described. |
FIG. 1 is a perspective view of a septic tank cover showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is front view thereof, and the rear view is identical thereto;
FIG. 4 is a side view thereof, and the opposite side is identical thereto; and,
FIG. 5 is a bottom view thereof.
The tube portion of the cover is shown fragmented in FIGS. 1, 3 and 4 to indicate indeterminate length.
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