The ornamental design for a stackable interlocking can, as shown and described.
FIG. 1 is a perspective view of a stackable interlocking can showing my new design;
FIG. 2 is a top plan view thereof, taken in the direction of arrow 2 in FIG. 5;
FIG. 3 is a side elevational view taken in the direction of arrow 3 in FIG. 5;
FIG. 4 is a bottom plan view thereof, taken in the direction of arrow 4 in FIG. 5; and,
FIG. 5 is a view identical to FIG. 1 with descriptive legend directional arrows included which are necessary for better understanding of the drawing in accordance with 37 CFR 1084(o) and appropriate with good engineering practices, so as to best indicate in what directions previous views are taken so that nothing regarding the design sought to be patented is ambiguous or left to conjecture.
Any parts illustrated in broken lines is for environmental structure, and is not part of the design sought to be patented, and forms no part of the claimed design.