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发明名称
Method of making stamping dies for aluminum sheet and the like
摘要
申请公布号
US2384229(A)
申请公布日期
1945.09.04
申请号
US19430495129
申请日期
1943.07.17
申请人
REYNOLDS METALS CO.
发明人
AMMANN RICHARD
分类号
B21D37/20;B22C9/06;B22D21/00
主分类号
B21D37/20
代理机构
代理人
主权项
地址
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