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, Duane F. Nagel +3 more | 1997-09-02 |
| 5630643 | Upholstered chair with two-piece shell | Brian L. Scholten, James E. Abraham, Dale M. Groendal, Thomas R. Hahn, Douglas A. Smith | 1997-05-20 |
| 5630647 | Tension adjustment mechanism for chairs | Kurt R. Heidmann, Brian L. Christensen, Michael W. Haan, Glenn A. Knoblock, Eric McClure +6 more | 1997-05-20 |