The ornamental design for an umbrellatableattachment, as shown and described.
FIG. 1 is a top perspective view of my new umbrella table attachment;
FIG. 2 is a side elevation thereof, it being understood that the view from all sides is identical;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a sectional view taken on line 5-5 of FIG. 7;
FIG. 6 is a sectional view taken on line 6-6 of FIG. 7; and,
FIG. 7 is a side elevational view of the umbrella stand shown in an alternate position of use, holding an umbrella and attached to a table.
The broken lines shown in the drawings are for the purpose of illustrating environment and portions of the article, and form no part of the claimed design.