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The ornamental design for hearing aid coupler, as shown and described. |
FIG. 1 is a perspective view of a hearing aid coupler showing my new design;
FIG. 2 is a left side elevational view thereof, the other side being a mirror image thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and
FIG. 6 is a rear elevational view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jan 01 1900 | LIBBY, E ROBERT | ASSOCIATED AUDITORY INSTRUMENTS, INC 6798 MARKET ST ,UPPER DARBY, PA 19082 A CORP OF PA | ASSIGNMENT OF ASSIGNORS INTEREST | 004150 | /0235 | |
Nov 23 1981 | Associated Auditory Instruments, Inc. | (assignment on the face of the patent) | / |
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