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发明名称
IMPIANTO DI ALIMENTAZIONE DI ENERGIA PER UNA TRIVELLA RUOTANTE
摘要
申请公布号
IT1185573(B)
申请公布日期
1987.11.12
申请号
IT19850020794
申请日期
1985.05.20
申请人
INGERSOLL-RAND CO
发明人
ZINGL HANS
分类号
E21B19/086;F01B15/02;(IPC1-7):E21B/
主分类号
E21B19/086
代理机构
代理人
主权项
地址
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