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发明名称
METHODS AND APPARATUS FOR COVERING BALLS
摘要
申请公布号
CA471611(A)
申请公布日期
1951.02.20
申请号
CAD471611
申请日期
申请人
FRED T. ROBERTS
发明人
FRED T. ROBERTS
分类号
主分类号
代理机构
代理人
主权项
地址
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