Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6914980 | Power switch device utilizing phone loop signals to control supply of electrical power to a telephony instrument | — | 2005-07-05 |
| 6532984 | Constant flow liquid supplier | — | 2003-03-18 |
| D311146 | Multiple point digital stimulus/response probe | Cheryl A. Hughes | 1990-10-09 |