Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6566634 | Induction driven power supply for circuits accompanying portable heated items | Douglas A. Johnson | 2003-05-20 |
| 6534753 | Backup power supply charged by induction driven power supply for circuits accompanying portable heated container | Douglas A. Johnson | 2003-03-18 |