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经营范围
发明名称
Hand-eye trainer
摘要
A ball connected to an elastic string is suspended at adjustable elevations relative to the ground for free swinging movement toward and away from a user for hand- and eye-coordination training.
申请公布号
US2004254036(A1)
申请公布日期
2004.12.16
申请号
US20030460344
申请日期
2003.06.11
申请人
SMITH MICHAEL J.
发明人
SMITH MICHAEL J.
分类号
A63B69/00;(IPC1-7):A63B69/00
主分类号
A63B69/00
代理机构
代理人
主权项
地址
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