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发明名称
Retractable boring tool assembly
摘要
申请公布号
US2438741(A)
申请公布日期
1948.03.30
申请号
US19450618935
申请日期
1945.09.27
申请人
EXCELL-O CORPORATION
发明人
COULSON WALTER
分类号
B23B29/034
主分类号
B23B29/034
代理机构
代理人
主权项
地址
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