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发明名称
Mechanical device
摘要
申请公布号
US3344647(A)
申请公布日期
1967.10.03
申请号
US19650446188
申请日期
1965.04.07
申请人
NATIONAL ELECTRIC WELDING MACHINES CO.
发明人
BERGER BARRON D.
分类号
A22C7/00;B21D19/08;B21D53/76
主分类号
A22C7/00
代理机构
代理人
主权项
地址
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