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发明名称
Method of making bushings for electric conduits
摘要
申请公布号
US1977861(A)
申请公布日期
1934.10.23
申请号
US19300500834
申请日期
1930.12.08
申请人
NATIONAL ENGINEERING CORPORATION
发明人
POND DWIGHT W.
分类号
B21D53/24
主分类号
B21D53/24
代理机构
代理人
主权项
地址
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