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发明名称
DETACHABLE BIT FORGING AND REFINISHING METHOD
摘要
申请公布号
CA438777(A)
申请公布日期
1946.12.24
申请号
CAD438777
申请日期
申请人
THE INTERNATIONAL NICKEL COMPANY OF CANADA
发明人
PETER WILLIAM MARTEL
分类号
主分类号
代理机构
代理人
主权项
地址
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