Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8021246 | Iron golf club heads and golf club sets with variable weight distribution | David Llewellyn, Isamu Toshinari, Kazuhiro Doi, Tomoaki Aoki | 2011-09-20 |
| 8016694 | Golf club head and golf clubs | David Llewellyn, Masao Nagai | 2011-09-13 |
| 7972222 | Iron golf club heads and golf club sets with variable weight distribution | David Llewellyn, Kazuhiro Doi | 2011-07-05 |
| D639363 | Wood-type golf club | David Llewellyn, Arata Kamo | 2011-06-07 |