| 7841664 |
Chair with control system |
Russell T. Holdredge, Christopher J. Norman, Kurt R. Heidmann, Mark Dinnewith |
2010-11-30 |
| 5979845 |
Hub tube/washer assembly |
Robert J. Battey, John L. Hendricks, Charles L. Cartwright |
1999-11-09 |
| 5979988 |
Modular chair construction and method of assembly |
Kurt R. Heidmann, Brian L. Christensen, Michael W. Haan, Glenn A. Knoblock, Eric McClure +6 more |
1999-11-09 |
| 5964436 |
Chair base |
Robert J. Battey, Robert S. Grooters, Kurt R. Heidmann, John L. Hendricks, Michael A. Kolarik +2 more |
1999-10-12 |
| 5906343 |
Chair base |
Robert J. Battey, Robert S. Grooters, Kurt R. Heidmann, John L. Hendricks, Michael A. Kolarik +2 more |
1999-05-25 |
| 5873634 |
Modular chair construction and method of assembly |
Kurt R. Heidmann, Brian L. Christensen, Micahel W. Haan, Glenn A. Knoblock, Eric McClure +6 more |
1999-02-23 |
| 5782536 |
Modular chair construction and method of assembly |
Kurt R. Heidmann, Brian L. Christensen, Michael W. Haan, Glenn A. Knoblock, Eric McClure +6 more |
1998-07-21 |
| 5630649 |
Modular chair construction and method of assembly |
Kurt R. Heidmann, Brian L. Christensen, Patrick P. Schwoerer, James P. Steffens |
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 |