Slat Lock Device

FIG. 1 is a top, front, right-side isometric view of the slat lock device. FIG. 2 is a bottom, rear, left-side isometric view of the slat lock device. FIG. 3 is front elevation view of the slat lock device. FIG. 4 is rear elevation view of the slat lock device. FIG. 5 is a left-side elevation view of the slat lock device. FIG. 6 is a right-side elevation view of the slat lock device; and, FIG. 7 is a top plan view of the slat lock device. The broken lines in the drawings depict portions of the slat lock device that form no part of the claimed design. The unshaded surfaces between the solid and broken lines in FIGS. 1 , and FIGS. 4 - 7 form no part of the claimed design.