The ornamental design for a protectivebumperdesign for electronic devices, as shown and described.
FIG. 1 is a top, right, front perspective view of a laptop case having top and bottom shells, each shell having four protective bumpers at the corners according to an embodiment of our design.
FIG. 2 is a bottom, left, back perspective view thereof.
FIG. 3 is a top plan view thereof.
FIG. 4 is a bottom plan view thereof.
FIG. 5 is a front plan view thereof.
FIG. 6 is a back plan view thereof.
FIG. 7 is a right side view thereof, the left side plan view being a mirror image thereof; and,
FIG. 8 is a right side cross-sectional view thereof taken along line 8-8 of FIG. 3.
Shading lines and stippling are used to show solid structures and are not intended to indicate surface decoration.
Dashed lines are used to show environment and do not form part of the claimed design.