Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007103 | Automatic shut-off and alarm for electric heater | Paul C. Tyrrell, Johannes B. Backes, David D. McCormick | 1991-04-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007103 | Automatic shut-off and alarm for electric heater | Paul C. Tyrrell, Johannes B. Backes, David D. McCormick | 1991-04-09 |