The ornamental design for a deformableseatbracket, as shown and described.
FIG. 1 is a perspective view of a deformable seat bracket according to our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a back elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top side elevation view thereof;
FIG. 7 is a bottom plan view thereof; and
FIG. 8 is another perspective view thereof; and,
FIG. 9 is a third perspective view thereof.
The dash-dash broken lines in the drawings illustrate portions of the deformable seat bracket and form no part of the claimed design. The dash-dot-dash broken lines in the drawings define bounds of the claim and form no part thereof.