Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6240392 | Communication device and method for deaf and mute persons | Wesley O. Krueger | 2001-05-29 |
| 5966680 | Motion sickness/vertigo prevention device and method | — | 1999-10-12 |