Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7004203 | Insulated heating and/or sanitation pipe | Joerg Claussen, Hans-Joachim Dusoer, Jyri Jaervenkyla, Franz-Josef Riesselmann | 2006-02-28 |
| 5274972 | Installation duct for utility lines | — | 1994-01-04 |
| 5214888 | Installation duct | — | 1993-06-01 |