The ornamental design for a doubled sided blanketclip, as shown and described.
FIG. 1 is a perspective view of our new design of a double sided blanket clip;
FIG. 2 is a top elevational view thereof;
FIG. 3 is a bottom 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 front elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken line circle in FIGS. 1, 2, 3, 6, and 7 depict a recessed element for the purpose of showing environment only and form no part of the claimed design. The other broken lines depict interior elements for the purpose of showing environment only and form no part of the claimed design.