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发明名称
Expanding tool
摘要
申请公布号
US3232011(A)
申请公布日期
1966.02.01
申请号
US19630293088
申请日期
1963.07.05
申请人
CALUMET & HECLA, INC.
发明人
PINEAU WIFRED JAY
分类号
B24D9/02
主分类号
B24D9/02
代理机构
代理人
主权项
地址
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