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The ornamental design for an extension ladder with slip guards, as shown and described.
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FIG. 1 is a perspective view of an extension ladder with slip guards.
FIG. 2 is a rear elevational view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a left side elevational view thereof.
FIG. 5 is a right side elevational view thereof.
FIG. 6 is a top plan view of the extension ladder with slip guards; and,
FIG. 7 is a bottom plan view thereof.
Lear, Steven, Lear, Margaret, Lear, Terry
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