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发明名称
DISPOSITIVO DI ROTAZIONE-BLOCCAGGIO PER TRIVELLA CONTINUA PER PERFORAZIONI
摘要
申请公布号
IT1104958(B)
申请公布日期
1985.10.28
申请号
IT19780083355
申请日期
1978.03.29
申请人
CASAGRANDE & C.SPA
发明人
CASAGRANDE BRUNO
分类号
E21C;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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