The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a top view of the invention;
FIG. 2 is a bottom view of the invention;
FIG. 3 is a side view of the invention, which is identical as seen from both sides;
FIG. 4 is a perspective top view of the invention from the rear;
FIG. 5 is a perspective top view of the invention from the front;
FIG. 6 is a top view of another embodiment of the invention;
FIG. 7 is a bottom view of the other embodiment;
FIG. 8 is an side view of the other embodiment, which is identical as seen from both sides;
FIG. 9 is a perspective top view from the rear of the other embodiment; and,
FIG. 10 is a perspective top view from the front of the other embodiment.
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