Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482153 | Oil retention in the bore/piston interfaces of ported cylinders in opposed-piston engines | Steven J. Bethel, Brian J. Callahan | 2016-11-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482153 | Oil retention in the bore/piston interfaces of ported cylinders in opposed-piston engines | Steven J. Bethel, Brian J. Callahan | 2016-11-01 |