Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4514244 | Plastic pipe elements and methods for making same | Kenneth J. Matthews | 1985-04-30 |
| 4457542 | Plastic pipe fitting | Kenneth J. Matthews | 1984-07-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4514244 | Plastic pipe elements and methods for making same | Kenneth J. Matthews | 1985-04-30 |
| 4457542 | Plastic pipe fitting | Kenneth J. Matthews | 1984-07-03 |