The ornamental design for a skinliftingthreaddevice, as shown and described.
FIG. 1 is a first perspective view of a skin lifting thread device showing my new design;
FIG. 2 is a second perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines in the drawings illustrate portions of the skin lifting thread device which form no part of the claimed design.
The skin lifting thread device is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.