I claim the ornamental design for an art deco style frame, as shown and described.
FIG. 1 is a front elevation view of my new design;
FIG. 2 is a back elevation view;
FIG. 3 is top plan view;
FIG. 4 is bottom plan view;
FIG. 5 is a right side elevation view; and,
FIG. 6 is a left side elevation view.
The broken lines shown are for illustrative purposes only of fasteners to retain the inventive design of the frame to a sign housing or picture frame, and form no part of the claimed design.