The ornamental design of a protectivecover, as shown and described.
FIG. 1 is a perspective view of a protective cover showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and
FIG. 8 shows a front right perspective view of elastic deformation of a protective cover in use mode accommodating a digital X-ray sensitive device; and,
FIG. 9 shows a cross section view of FIG. 8 with a digital information transmission cable.
The broken line showing of parts of the drawings in cross section is included for the purpose of illustrating use and environment and forms no part of the claimed design.