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经营范围
发明名称
AUTOMATIC PIPE ELEVATOR
摘要
申请公布号
GB2158856(B)
申请公布日期
1989.07.12
申请号
GB19850009614
申请日期
1985.04.15
申请人
* WALKER-NEER MANUFACTURING CO INC;* W-N APACHE CORPORATION
发明人
KEITH M * HANEY;CLYDE A * WILLIS
分类号
B25J15/02;E21B19/06
主分类号
B25J15/02
代理机构
代理人
主权项
地址
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