The ornamental design for a mower, as shown and described.
FIG. 1 is a front perspective view of a mower showing our new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right side elevational view thereof;
FIG. 8 is a left side elevational view thereof; and,
FIG. 9 is a front perspective view of the mower in accordance with our new design illustrating a state in which an environmental structure (a grass catcher box) are attached to the mower.
The broken lines in the drawings illustrate the environmental structure or portions of the mower which form no part of the claimed design.