Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5734728 | Portable sound speaker system and driving circuit therefor | — | 1998-03-31 |
| 5143373 | Tennis racket | — | 1992-09-01 |
| 5135468 | Method and apparatus of varying the brain state of a person by means of an audio signal | — | 1992-08-04 |
| 5050982 | Method and apparatus for improving visual acuity | — | 1991-09-24 |