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发明名称
Die mechanism
摘要
申请公布号
US1777772(A)
申请公布日期
1930.10.07
申请号
US19290354342
申请日期
1929.04.11
申请人
MAERICAN FLANGE & MANUFACTURING CO.
发明人
SHERA JOHN W.
分类号
B21D51/40
主分类号
B21D51/40
代理机构
代理人
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