The ornamental design for a mixer, as shown and described.
This design patent application is related to U.S. Design patent application Ser. No. 29/622,337, filed concurrently with this design patent application.
FIG. 1 is a top perspective view of an embodiment of a mixer showing the claimed new design;
FIG. 2 is a bottom perspective view of the mixer of FIG. 1;
FIG. 3 is a front elevational view of the mixer of FIG. 1;
FIG. 4 is a rear elevational view of the mixer of FIG. 1;
FIG. 5 is a left side elevational view of the mixer of FIG. 1;
FIG. 6 is a right side elevational view of the mixer of FIG. 1;
FIG. 7 is a top plan view of the mixer of FIG. 1; and,
FIG. 8 is a bottom plan view of the mixer of FIG. 1.