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发明名称
Die
摘要
申请公布号
US1940294(A)
申请公布日期
1933.12.19
申请号
US19300495544
申请日期
1930.11.13
申请人
CHRYSLER CORPORATION
发明人
CALKINS WILLIAM G.
分类号
B21D37/20;C22C33/02
主分类号
B21D37/20
代理机构
代理人
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