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发明名称
Bit with detachable blade
摘要
申请公布号
US2577987(A)
申请公布日期
1951.12.11
申请号
US19460715423
申请日期
1946.12.11
申请人
ROBERT H. CLARK
发明人
WILSON HARRY C.
分类号
B27G15/00
主分类号
B27G15/00
代理机构
代理人
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