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发明名称
Ball and method of making it
摘要
申请公布号
US2609202(A)
申请公布日期
1952.09.02
申请号
US19480052098
申请日期
1948.09.30
申请人
J. A. DUBOW MANUFACTURING CO., INC.
发明人
WINTERBAUER HENRY T.
分类号
A63B39/00
主分类号
A63B39/00
代理机构
代理人
主权项
地址
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