The ornamental design for an electric pressurecooker, as shown and described.
FIG. 1 is a front elevation view of an electric pressure cooker, showing our new design;
FIG. 2 is a back elevation view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a perspective view thereof.
The broken lines shown in the figures depict portions of electric pressure cooker that form no part of the claimed design. The shade lines in the figures show contour and not surface ornamentation. The shade lines form no part of the claimed design.