The ornamental design for a bottleopener, as shown and described.
FIG. 1 is a top view of a bottle opener showing our new design.
FIG. 2 is a top right side perspective view of the bottle opener; the top left side perspective view is a mirror image of the top right side perspective view.
FIG. 3 is a top right side perspective cross-sectional view of the bottle opener taken from the line 3-3 in FIG. 2; the top left side perspective cross-sectional view is a mirror image of the top right perspective cross-sectional view.
FIG. 4 is a right side view of the bottle opener; the left side view is a mirror image of the right side view.
FIG. 5 is a bottom view of the bottle opener; and,
FIG. 6 is a bottom right side perspective view of the bottle opener; the bottom left side perspective view is a mirror image of the bottom right side perspective view.