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发明名称
Tube-perforating mechanism
摘要
申请公布号
US2999525(A)
申请公布日期
1961.09.12
申请号
US19580762657
申请日期
1958.09.22
申请人
MERCER CARL A
发明人
MERCER CARL A.
分类号
B21D28/28
主分类号
B21D28/28
代理机构
代理人
主权项
地址
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