The ornamental design for a vacuumbottle, as shown and described.
FIG. 1 is a front elevational view of a vacuum bottle, showing a preferred embodiment of the new design, the rear elevation being a mirror image thereof.
FIG. 2 is a top plan view of the vacuum bottle of FIG. 1;
FIG. 3 is a bottom plan view of the vacuum bottle of FIG. 1.
FIG. 4 is a left side elevational view of the vacuum bottle of FIG. 1; and,
FIG. 5 is a right side elevational view of the vacuum bottle of FIG. 1.