The ornamental design for an umbrellastand, as shown and described.
FIG. 1 is a top side perspective view of my new design for an umbrella stand with an insert part in place.
FIG. 2 is a bottom side perspective view of FIG. 1.
FIG. 3 is a bottom side perspective view of the insert part when the insert part is removed from the umbrella stand, the only difference being the insert part is removed from the umbrella stand, it being understood that all other surfaces are the same as those of FIG. 1.
FIG. 4 is a bottom side perspective view of umbrella stand with the insert part removed, the only difference being the insert part is removed, it being understood that all other surfaces are the same as those of FIG. 1.
FIG. 5 is a top side perspective view of FIG. 4.
FIG. 6 is a top plan view of FIG. 1.
FIG. 7 is a bottom side plan view of FIG. 1; and,
FIG. 8 is a side elevation view of FIG. 1, it being understood that all side elevation views are identical.
The broken lines are included for the purpose of illustrating portions of the umbrella stand that form no part of the claimed design.