Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D477151 | Armless ergonomic chair | Marcus C. Koepke, Jay R. Machael, Craig H. Schultz, Douglas A. Schroeder, Erik A. Steffensen +4 more | 2003-07-15 |
| D477164 | Chair back | Marcus C. Koepke, Erik A. Steffensen, Craig H. Schultz, Douglas A. Schroeder, Tim Coffield +1 more | 2003-07-15 |
| D476821 | Ergonomic chair | Marcus C. Koepke, Jay R. Machael, Craig H. Schultz, Douglas A. Schroeder, Erik A. Steffensen +4 more | 2003-07-08 |