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发明名称
Apparatus for boring square holes
摘要
申请公布号
US2985204(A)
申请公布日期
1961.05.23
申请号
US19580777303
申请日期
1958.12.01
申请人
JOHN KOZAK
发明人
KOZAK JOHN
分类号
B27F5/06
主分类号
B27F5/06
代理机构
代理人
主权项
地址
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