FIG. 1 is a left side view of a protective helmet showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a rear view thereof; and,
FIG. 5 is a top view thereof.
We claim the ornamental design for a protective helmet, as shown and described.
Patent number: D677006 Type:
Filed: Jan 13, 2011 Date of Patent: Feb 26, 2013 Inventors:
Primary Examiner: Ruth McInroy Application Number: 29/383,170