Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671642 | Method of evaluating energy loss of golf ball | Masaki Shiraishi | 2003-12-30 |
| 6556944 | Method of analyzing physical property of golf ball and method of manufacturing golf ball | — | 2003-04-29 |