Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701931 | Water relief valve for a drainage system | James E. Petrie | 1997-12-30 |
| D377389 | Channel drain and support bracket unit | Robert A. Babcock | 1997-01-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701931 | Water relief valve for a drainage system | James E. Petrie | 1997-12-30 |
| D377389 | Channel drain and support bracket unit | Robert A. Babcock | 1997-01-14 |