The ornamental design for a bedframe, as shown and described.
FIG. 1 is a perspective view of a bed frame in a first lower position
viewed obliquely from above;
FIG. 2 is a perspective view of the bed frame of FIG. 1 in a second
position with the foot end thereof raised with respect to the first
position; and,
FIG. 3 is a perspective view of the bed frame of FIG. 1 in a third position
with the foot end in the position of FIG. 1 and the head end raised to an
almost upright position viewed obliquely from above, the opposite side
being a mirror image thereof.