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经营范围
发明名称
FEED CABLE DEVICE.
摘要
申请公布号
AU1989570(A)
申请公布日期
1972.03.16
申请号
AU19700019895
申请日期
1970.09.14
申请人
JOY MANUFACTURING COMPANY
发明人
JOHN E. GORDON
分类号
E21B;E21C;(IPC1-7):E21C
主分类号
E21B
代理机构
代理人
主权项
地址
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