Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D570625 | Chair backrest detail | Derek Schweikarth, Michael L. Deimen, Derek Polen, Marilyn Satkamp, Paula Schmidt +1 more | 2008-06-10 |
| 7234777 | Chair with adjustable armrests and backrest | Derek Schweikarth | 2007-06-26 |
| D507911 | Chair backrest and armrest assembly | Derek Schweikarth | 2005-08-02 |