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发明名称
MANHOLE DRILLING ASSEMBLY
摘要
申请公布号
ZA201105239(B)
申请公布日期
2012.02.29
申请号
ZA20110005239
申请日期
2011.07.15
申请人
MCNAMARA JOHN LEW
发明人
MCNAMARA JOHN LEW
分类号
B23B;E21B
主分类号
B23B
代理机构
代理人
主权项
地址
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