发明名称 Golf club head
摘要 A golf club head according to the present invention comprises a plurality of score lines on a face, and a stair-shaped portion comprising a plurality of steps formed on a side wall of the score line from a face side end of the side wall in a depth direction of the score line.
申请公布号 US7922601(B2) 申请公布日期 2011.04.12
申请号 US20090355326 申请日期 2009.01.16
申请人 BRIDGESTONE SPORTS CO., LTD 发明人 BAN WATARU;SATO FUMIAKI;WADA KOZUE
分类号 A63B53/04 主分类号 A63B53/04
代理机构 代理人
主权项
地址