Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D332316 | Stile for use primarily as part of a space divider frame | Roland A. Mentessi | 1993-01-05 |
| 5155955 | Frame based office space dividing system | Douglas C. Ball, Sherman Robbins, Michel J. Fischer, Leon Goldik, Donald J. Staufenberg +5 more | 1992-10-20 |
| 4863124 | Corner work center | Douglas C. Ball, Jeffrey M. Gioitta | 1989-09-05 |