The ornamental design for a bedlifter, as shown and described.
FIG. 1 is a front perspective view of a bed lifter;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a bottom plan view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for the purpose of illustrating parts of the bed lifter that form no part of the claimed design.