The ornamental design for a combined cardholder and cover for portable electronic device, as shown and described.
FIG. 1 is a front perspective view of a combined card holder and cover for portable electronic device showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a front perspective view thereof showing the combined card holder and cover in a state of use with an unclaimed card; and,
FIG. 9 is another front perspective view thereof showing the combined card holder and cover in a state of use with an unclaimed card.
The dot-dash broken lines represent boundaries of the claimed design. The dash-dash broken lines depict unclaimed environment. The broken lines form no part of the claimed design.