Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585605 | Measurement of the coefficient of restitution of a golf club | Pin Fan, Steven M. Ehlers, John B. Kosmatka | 2003-07-01 |
| 6527648 | Measurement of the coefficient of restitution of a golf club | Frank Fan, Steven M. Ehlers, John B. Kosmatka | 2003-03-04 |