Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821327 | Acoustical stethoscope with electrical filter | Charles Caron | 1989-04-11 |
| 4218674 | Method and a system for verifying authenticity safe against forgery | Jorgen Brosow | 1980-08-19 |