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经营范围
发明名称
Fine-grained steel hardened article
摘要
申请公布号
US2382467(A)
申请公布日期
1945.08.14
申请号
US19450572583
申请日期
1945.01.12
申请人
ELECTRO METALLURGICAL COMPANY
发明人
CRAFTS WALTER
分类号
C22C38/22
主分类号
C22C38/22
代理机构
代理人
主权项
地址
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