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The ornamental design for a step-stringer layout template, as shown. |
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FIG. 1 is a plane front view of a step-stringer layout template;
FIG. 2 is a right end view thereof;
FIG. 3 is a perspective view of the back side thereof;
FIG. 4 is a left end view thereof; and,
FIG. 5 is a top plan view thereof.
Schroeder, John F., Schroeder, Claudia K.
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