Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D494792 | Back for a seating structure | Johann Burkhard Schmitz, Nicolai Neubert, Carola Zwick, Roland Zwick | 2004-08-24 |
| D490994 | Task chair | Johann Burkhard Schmitz, Nicolai Neubert, Carola Eva Marianne Zwick, Roland Rolf Otto Zwick | 2004-06-08 |