Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864611 | Telephone handset attachment for use in-the-ear hearing aids | — | 1989-09-05 |
| D280022 | Hearing aid transducer or the like | Philip S. Egan, Richard G. Pimentel, Tom B. Soerensen | 1985-08-06 |