Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4535756 | Solar collectors | Frank W. Gilleland, Byron W. Engen | 1985-08-20 |
| 4384377 | Tub-shower backwall and sidewall panel interlock | Scott Calvert, Leslie A. Bowman, Merritt W. Seymour | 1983-05-24 |