Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682625 | Hot tub with adjustable headrest with water jet | Jeff Knight | 1997-11-04 |
| 5665228 | Ozone mixing system for a hydrotherapy spa | Steven A. Rork, Edward G. Ramsauer | 1997-09-09 |