The ornamental design for patient transfer mattress cover, as shown and described.
FIG. 1 is a top side perspective view of a patient transfer mattress cover showing our new design;
FIG. 2 is a bottom side perspective view of the patient transfer mattress cover shown in FIG. 1;
FIG. 3 is a top plan view of the patient transfer mattress cover shown in FIG. 1;
FIG. 4 is a bottom plan view of the patient transfer mattress cover shown in FIG. 1;
FIG. 5 is an end view of the patient transfer mattress cover shown in FIG. 1;
FIG. 6 is an opposite end view of the patient transfer mattress cover shown in FIG. 1; and,
FIG. 7 is a side view of the patient transfer mattress cover shown in FIG. 1.
In the drawings, the broken lines represent features of the patient transfer mattress cover that form no part of the claimed design. FIGS. 3 and 4 include portions shown broken away for ease of disclosure on the drawing sheet.