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发明名称
BLOCCAGGIO IDRAULICO PER TESTA DI TRIVELLA ROTATIVA.
摘要
申请公布号
IT9048474(D0)
申请公布日期
1990.11.14
申请号
IT19900048474
申请日期
1990.11.14
申请人
MASX ENERGY SERVICES GROUP INC
发明人
BAILEY THOMAS F;CAMPBELL JOHN E
分类号
E21B33/08
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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