Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5152843 | Method for removal hot water heater sediment | Daniel McDonald | 1992-10-06 |
| 4668289 | Method for reclaiming gold | Stanley H. Langer, Abel Saud, James A. Koutsky | 1987-05-26 |