Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8520874 | Hearing aid with an operational based switch | — | 2013-08-27 |
| 5165683 | Method and apparatus for sport swing training | James Earl Schiller | 1992-11-24 |
| 5002275 | Method and apparatus for sport swing training | James Earl Schiller | 1991-03-26 |