Theft Prevention Device

FIG. 1 is a perspective view of a theft prevention device, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The evenly-sized dashed broken lines shown in the drawings depict portions of the theft prevention device that form no part of the claimed design, while the unevenly-sized dash-dot-dash broken lines define the boundary of the claim and form not part of the claimed design.