Protective Storage Box

FIG. 1 is a top, front, left side perspective view of a protective storage box showing my new design;

FIG. 2 is a bottom, back, and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is another top, front, left side perspective view thereof, shown in an open position.

The broken lines shown in the drawings depict portions of the protective storage box that form no part of the claimed design.