Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8157325 | Chair back rest with improved resilience and support | Jay R. Machael, Marcus C. Koepke, Brian R. Trego, Brian L. Erickson | 2012-04-17 |
| 6687933 | Body support system with energy dissipation means | Marcus C. Koepke, Matthew J. Phillips | 2004-02-10 |
| 6669292 | Ergonomic chair | Marcus C. Koepke, Jamie Krull, Jay R. Machael, Tim Coffield, Keith L. Davis +6 more | 2003-12-30 |
| 6598251 | Body support system | Marcus C. Koepke, Matthew J. Phillips, Craig H. Schultz | 2003-07-29 |