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发明名称
Playing ball center
摘要
申请公布号
US2117083(A)
申请公布日期
1938.05.10
申请号
US19360077810
申请日期
1936.05.04
申请人
GREAT WESTERN ATHLETIC GOODS CO.
发明人
DAVIS CARLTON C.;GREGORY JESSE HOWELL
分类号
A63B37/00;C21D9/00
主分类号
A63B37/00
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代理人
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