We claim the ornamental design for a protective face shield, as shown and described.
FIG. 1 is a top perspective view of a protective face shield showing the claimed design.
FIG. 2 is a front elevational view of the protective face shield thereof.
FIG. 3 is a back elevational view of the protective face shield thereof.
FIG. 4 is a side elevational view of the protective face shield thereof.
FIG. 5 is a side elevational view of the protective face shield thereof.
FIG. 6 is a top plan view of the protective face shield thereof.
FIG. 7 is a bottom plan view of the protective face shield thereof; and,
FIG. 8 is a rear perspective view of protective face shield shown in an unfastened position.
The broken lines depicting a person's head in FIG. 1 represent environmental subject matter that forms no part of the claimed design. The remaining evenly broken lines in the drawings depict portions of the protective face shield that form no part of the claimed design. The dash-dot lines depict the boundaries of the claimed design and form no part thereof.