Lock

FIG. 1 is a front perspective view of a lock showing my 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 left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1 .

The broken lines in the drawings illustrate portions of the lock which form no part of the claimed design. The dot dash dot broken lines surrounding the detail areas in FIGS. 1 and 9 denote the boundaries of the detail areas and form no part of the claim design.