Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35871 | Water reclamation system and method | Ralph M. Hansen, Jr. | 1998-08-18 |
| 5223150 | Water reclamation system and method | Ralph M. Hansen, Jr. | 1993-06-29 |
| 5093012 | Water reclamation system and method | Ralph M. Hansen, Jr. | 1992-03-03 |