Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662381 | Chair construction and method of assembly | Charles P. Roossien, David C. Pugh, Dale M. Groendal, James E. Massey, Robert Scheper +3 more | 1997-09-02 |
| 5630643 | Upholstered chair with two-piece shell | Brian L. Scholten, James E. Abraham, Dale M. Groendal, Robert Scheper, Thomas R. Hahn | 1997-05-20 |
| 5629404 | Impact resistant polymers based on bisphenol-A-polycarbonate | Charles W. Ulmer, II | 1997-05-13 |