Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957793 | Waste pipe system comprising plastic pipe parts made of thermoplastic material with sound-proofing properties | Ali Guettouche | 1990-09-18 |
| 4419067 | Device for connecting plastics tubes by heatsealing | — | 1983-12-06 |
| 4206785 | Plastic tube part, particularly thermoplastic tube part | Eberhart Setzer | 1980-06-10 |
| 4193105 | Pipe with an external sealing body | — | 1980-03-11 |