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发明名称
TUBING PLUG INDICATOR
摘要
申请公布号
GB9114257(D0)
申请公布日期
1991.08.21
申请号
GB19910014257
申请日期
1991.07.02
申请人
HEAD, PHILIP F
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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