Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7620194 | Digital hearing aid battery conservation method and apparatus | John Sayler | 2009-11-17 |
| 7151838 | Digital hearing aid battery conservation method and apparatus | John Sayler | 2006-12-19 |
| 5613216 | Self-contained vehicle proximity triggered resettable timer and mass transit rider information system | — | 1997-03-18 |