Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810849 | Four-stroke internal combustion engine | Nicholas Hirsch, Mark Donald Schaefer, Michael Braun, Darrell Wiatrowski, Ronald Lee Bartelt +1 more | 2004-11-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810849 | Four-stroke internal combustion engine | Nicholas Hirsch, Mark Donald Schaefer, Michael Braun, Darrell Wiatrowski, Ronald Lee Bartelt +1 more | 2004-11-02 |