Drive unit for anesthetic

FIG. 1 is a perspective view of an ornamental design for a drive unit for anesthetic;

FIG. 2 is a front elevational view of the ornamental design;

FIG. 3 is a back elevational view of the ornamental design;

FIG. 4 is a side elevational view of the ornamental design of which the opposing side is a mirror image;

FIG. 5 is a top plan view of the ornamental design; and,

FIG. 6 is a bottom view of the ornamental design.

The broken lines illustrate portions of the drive unit for anesthetic and form no part of the claimed design.