Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6502904 | Arm support for a chair | — | 2003-01-07 |
| D417792 | Office chair | Stefan Preisig | 1999-12-21 |
| 4804227 | Point-synchronized adjustment device for office chairs | — | 1989-02-14 |
| 4685733 | Chair | Rainer Machate, Robert Vonhausen | 1987-08-11 |