The ornamental design for a bathtub mounted infantsupport, as shown.
FIG. 1 is a top perspective view of a bathtub mounted infant support,
showing my new design. The borken lines shown are for illustative purposes
only and forms no part of the claimed design;
FIG. 2 is a top plan view thereof;
FIG. 3 is an exploded fragmentary bottom plan view thereof, shown broken
away for ease of illustration;
FIG. 4 is a side view thereof, the opposite side being a mirror image
thereof; and,
FIG. 5 is an exploded fragmentary end view thereof, shown broken away for
ease of illustration.