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发明名称
APPARATUS FOR PROJECTING TENNIS BALLS FOR PRACTICE
摘要
申请公布号
CA297918(A)
申请公布日期
1930.03.04
申请号
CAD297918
申请日期
申请人
PERCY JEPSON
发明人
PERCY JEPSON
分类号
主分类号
代理机构
代理人
主权项
地址
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