Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651147 | Three-way trap elbow and cleanout system | David Steele | 1997-07-29 |
| 5509148 | Three-way trap elbow and cleanout system | David Steele | 1996-04-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651147 | Three-way trap elbow and cleanout system | David Steele | 1997-07-29 |
| 5509148 | Three-way trap elbow and cleanout system | David Steele | 1996-04-23 |