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发明名称
TENNIS PRACTICE DEVICE
摘要
申请公布号
GB8901397(D0)
申请公布日期
1989.03.15
申请号
GB19890001397
申请日期
1989.01.23
申请人
BOULAIS, YVES
发明人
分类号
主分类号
代理机构
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