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经营范围
发明名称
ACTUATOR VALVE
摘要
申请公布号
AU532339(B2)
申请公布日期
1983.09.29
申请号
AU19800058187
申请日期
1980.05.07
申请人
OTIS ENGINEERING CORP.
发明人
JOHN VICTOR FREDD
分类号
E21B34/10;(IPC1-7):E21B34/08;E21B43/12
主分类号
E21B34/10
代理机构
代理人
主权项
地址
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