Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10605465 | System and method for using alternative energy source for hot water heater storage tank | Joseph Ferron | 2020-03-31 |
| 8132586 | Multiple flow rate detection system and method for consumer appliance | — | 2012-03-13 |
| RE37986 | Coding system for multiple transmitters and a single receiver | Carl T. Heitschel, Colin B. Willmott | 2003-02-11 |
| RE36703 | Coding system for multiple transmitters and a single receiver for a garage door opener | Carl T. Heitschel, Colin B. Willmott | 2000-05-16 |
| RE35364 | Coding system for multiple transmitters and a single receiver for a garage door opener | Carl T. Heitschel, Colin B. Willmott | 1996-10-29 |
| 4750118 | Coding system for multiple transmitters and a single receiver for a garage door opener | Carl T. Heitschel, Colin B. Willmott | 1988-06-07 |
| 4638433 | Microprocessor controlled garage door operator | — | 1987-01-20 |