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经营范围
发明名称
Baseball projecting apparatus
摘要
申请公布号
US2182369(A)
申请公布日期
1939.12.05
申请号
US19390252275
申请日期
1939.01.23
申请人
BARRON CHRISTOPHER T
发明人
BARRON CHRISTOPHER T.
分类号
A63B69/40
主分类号
A63B69/40
代理机构
代理人
主权项
地址
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