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发明名称
Method and apparatus for forming sheet members
摘要
申请公布号
US3241348(A)
申请公布日期
1966.03.22
申请号
US19630299960
申请日期
1963.08.05
申请人
WALLACE EXPANDING MACHINES, INC.
发明人
ROPER RALPH E.
分类号
B21D22/02
主分类号
B21D22/02
代理机构
代理人
主权项
地址
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