Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D386023 | Seat and back unit for a chair | William E. Stumpf, Donald Chadwick, Carolyn Keller | 1997-11-11 |
| D377431 | Seat and back unit for a chair | William E. Stumpf, Donald Chadwick, Carolyn Keller | 1997-01-21 |