The ornamental design for a vacuumpump, as shown and described.
The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front-right perspective view of a vacuum pump showing our new design.
FIG. 2 is a front elevation view thereof.
FIG. 3 is a back elevation view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a bottom plan view thereof.
FIG. 6 is a left elevation view thereof.
FIG. 7 is a right elevation view thereof; and,
FIG. 8 is a back-left perspective view thereof.
The broken lines in the drawings depict portions of the vacuum pump that form no part of the claim. All interior elements visible within the areas bound by the broken lines form no part of the claimed design.