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发明名称
Reenforced metallic structural sheet and method of making the same
摘要
申请公布号
US1905413(A)
申请公布日期
1933.04.25
申请号
US19300424828
申请日期
1930.01.31
申请人
KRAMER ANDREW A
发明人
KRAMER ANDREW A.
分类号
B21D39/02
主分类号
B21D39/02
代理机构
代理人
主权项
地址
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