Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687951 | Drain valve | Erasmao Porfido | 1997-11-18 |
| 5670012 | Electrically weldable plastic fitting | Erasmo Porfido | 1997-09-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687951 | Drain valve | Erasmao Porfido | 1997-11-18 |
| 5670012 | Electrically weldable plastic fitting | Erasmo Porfido | 1997-09-23 |