Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474109 | Multilayer conduit having a polyester layer | Georg Stoeppelmann | 1995-12-12 |
| 5111849 | Helical pipes and method of manufacture thereof | — | 1992-05-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474109 | Multilayer conduit having a polyester layer | Georg Stoeppelmann | 1995-12-12 |
| 5111849 | Helical pipes and method of manufacture thereof | — | 1992-05-12 |