Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D469536 | Medical electrode | Timothy R. Kretschmer | 2003-01-28 |
| 4925214 | Count down system for recording charts | Donald R. Hazelton, Joseph Lyons, Eugene H. Spender, Jr. | 1990-05-15 |