Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7004203 | Insulated heating and/or sanitation pipe | Hans-Joachim Dusoer, Joerg Hansen, Jyri Jaervenkyla, Franz-Josef Riesselmann | 2006-02-28 |
| 6253794 | Conduit in particular for sanitary and heating installation purposes | Franz-Josef Riesselmann, Bernhard Dankbar | 2001-07-03 |
| 6116572 | Valve | Josef Schlattmann, Franz-Josef Riesselmann, Christian Steffen Terhaar | 2000-09-12 |