Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5171434 | Effluent recycling sanitation system | Charles M. Anderson, Jr., George W. Cranfill | 1992-12-15 |
| 4894872 | Waterless sanitation system with ventilation | Charles M. Anderson, Jr. | 1990-01-23 |