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发明名称
A method and means for manufacturing twist drills
摘要
申请公布号
GB704424(A)
申请公布日期
1954.02.24
申请号
GB19520001623
申请日期
1952.01.21
申请人
JOHN M. PERKINS & SMITH LIMITED
发明人
PERKINS JOHN MERVYN;SMITH COLIN ALDERSON;SMITH BRIAN MUMFORD ALDERSON
分类号
B23P15/32
主分类号
B23P15/32
代理机构
代理人
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