The ornamental design for a handhelduvdisinfectantunit, as shown and described.
FIG. 1 is a front perspective view of a handheld ultraviolet (UV) disinfectant unit, showing my new design;
FIG. 2 is top plan view of FIG. 1;
FIG. 3 is a bottom plan view of FIG. 1;
FIG. 4 is a right side elevational view of FIG. 1;
FIG. 5 is a left side elevational view of FIG. 1;
FIG. 6 is a rear elevational view of FIG. 1; and,
FIG. 7 is a front elevational view of FIG. 1.
The broken lines immediately adjacent the shaded areas represent the bounds of the claim, while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.