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The ornamental design for a walker attachment, as shown and described. |
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FIG. 1 is a top left front perspective view of a walker attachment showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a rear elevational view thereof; and,
FIG. 7 is a bottom plan view thereof.
Brightbill, Keith E., Dobersztyn, David M.
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