Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D462186 | Chair | Craig H. Schultz, Douglas A. Schroeder, Eric J. Kurtz, Marcus C. Koepke, Ogden R. Olson | 2002-09-03 |
| D446400 | Chair | Craig H. Schultz, Douglas A. Schroeder, Marcus C. Koepke, Eric J. Kurtz, Ogden R. Olson | 2001-08-14 |
| D437702 | Chair | Marcus C. Koepke, Ogden R. Olson, Eric J. Kurtz | 2001-02-20 |
| D437704 | Chair | Marcus C. Koepke, Ogden R. Olson, Eric J. Kurtz | 2001-02-20 |
| 6161897 | Chair construction | Eric J. Kurtz, Ogden R. Olson, Marcus C. Koepke | 2000-12-19 |
| 5486035 | Occupant weight operated chair | Marcus C. Koepke | 1996-01-23 |
| 5314237 | Reclining chair | Marcus C. Koepke | 1994-05-24 |
| 5308145 | Reclining chair | Marcus C. Koepke | 1994-05-03 |
| D318588 | Chair control | — | 1991-07-30 |
| 4370002 | Attachment for chair arm | — | 1983-01-25 |