发明名称 PRACTICE DEVICE FOR A BALL GAME
摘要 <p>A practice device (1) is disclosed which is suitable for practising a game where a moving ball is hit with a stick, bat or racket. The device (1) comprises a support post (3), one or more rotation joints (4) on the support post (3), and two or more arms (5) disposed substantially symmetrically about the or each rotation joint (4). A ball (7) is connected or tethered at the end of each arm (5).</p>
申请公布号 WO1997033663(A1) 申请公布日期 1997.09.18
申请号 IE1997000017 申请日期 1997.03.12
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