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经营范围
发明名称
Improvements in alloy steel springs and spring blanks
摘要
申请公布号
GB399643(A)
申请公布日期
1933.10.12
申请号
GB19320024791
申请日期
1932.09.06
申请人
ELECTRO METALLURGICAL COMPANY
发明人
分类号
C22C38/38
主分类号
C22C38/38
代理机构
代理人
主权项
地址
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