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经营范围
发明名称
SELF-RETURNING FOOTBALL
摘要
A self-returning football includes a ball (1) and an elastic cord (2). One end of the cord (2) is attached to the ball (1) by a coupling device, and the other end is connected to a fixed pile (7).
申请公布号
WO2008122197(A8)
申请公布日期
2009.01.15
申请号
WO2008CN00578
申请日期
2008.03.25
申请人
CHI, FUCHEN
发明人
CHI, FUCHEN
分类号
A63B69/00
主分类号
A63B69/00
代理机构
代理人
主权项
地址
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