Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687996 | Molded part made of thermoplastic material | Hans-Werner Steinmetz, Helmut Hilger | 1997-11-18 |
| 5674588 | Welding sleeve for plastic pipe | Erasmo Porfido | 1997-10-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687996 | Molded part made of thermoplastic material | Hans-Werner Steinmetz, Helmut Hilger | 1997-11-18 |
| 5674588 | Welding sleeve for plastic pipe | Erasmo Porfido | 1997-10-07 |