Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701931 | Water relief valve for a drainage system | Trevor Phillips | 1997-12-30 |
| D363769 | Water relief valve for a drainage system | Trevor Phillips | 1995-10-31 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701931 | Water relief valve for a drainage system | Trevor Phillips | 1997-12-30 |
| D363769 | Water relief valve for a drainage system | Trevor Phillips | 1995-10-31 |