The ornamental design for an umbrellastand, as shown and described.
FIG. 1 is a perspective view of the umbrella stand of the invention showing stabilizer legs in a closed position;
FIG. 2 is a top view of the umbrella stand illustrated in FIG. 1;
FIG. 3 is a first side view of the umbrella stand illustrated in FIG. 1;
FIG. 4 is a second side view of the umbrella stand illustrated in FIG. 1;
FIG. 5 is a third side view of the umbrella stand illustrated in FIG. 1;
FIG. 6 is a fourth side view of the umbrella stand illustrated in FIG. 1;
FIG. 7 is a bottom view of the umbrella stand illustrated in FIG. 1; and,
FIG. 8 is a perspective view of the umbrella stand illustrated in FIG. 1 showing the stabilizer legs in an open position.
The broken lines in FIGS. 7 and 8 are included for the purpose of illustrating a portion of the umbrella stand that forms no part of the claimed design.