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发明名称
Pin retaining means for bowling alleys
摘要
申请公布号
US2652253(A)
申请公布日期
1953.09.15
申请号
US19500150361
申请日期
1950.03.18
申请人
JOHNS HENRY S;JOHNS WILLIAM H
发明人
JOHNS HENRY S.;JOHNS WILLIAM H.
分类号
A63D5/06
主分类号
A63D5/06
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代理人
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