The ornamental design for an electronic nervestimulatorunit, as shown and described.
FIG. 1 is a top, front and side perspective view of an electronic nerve
stimulator unit showing my new design, the cord portion of the hand
instrument being broken away for ease of illustration;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a rear elevational view thereof, with the hand instrument
removed; and
FIG. 4 is a side elevational view thereof, opposite to that shown in FIG.
2, with the hand instrument removed.