The ornamental design for a hearingaid, as shown and described.
FIG. 1 is a top perspective view of a hearing aid, including a behind-the-ear piece, a receiver assembly, and a dome, according to the present invention;
FIG. 2 is a side perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear view thereof; and,
FIG. 8 is a front view thereof.
The broken lines in the drawing views are included for the purpose of illustrating portions of the hearing aid that form no part of the claimed design.