Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11035501 | Insulated duct with air gap and method of use | Ronald L. Carlay, II, Donald Bradley Campbell | 2021-06-15 |
| 10352482 | Insulated duct with air gap and method of use | Ronald L. Carlay, II, Donald Bradley Campbell | 2019-07-16 |