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经营范围
发明名称
Process of hardening cams
摘要
申请公布号
US2017305(A)
申请公布日期
1935.10.15
申请号
US19330676467
申请日期
1933.06.19
申请人
CAMPBELL, WYANT & CANNON FOUNDRY COMPANY
发明人
CAMPBELL DONALD J.
分类号
C21D1/40
主分类号
C21D1/40
代理机构
代理人
主权项
地址
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