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发明名称
APPARATUS FOR MEASURING FLOW RATE OF MOLTEN SULFUR LEAVING A PRODUCTION BORE-HOLE
摘要
申请公布号
PL152024(B2)
申请公布日期
1990.10.31
申请号
PL19890277072
申请日期
1989.01.04
申请人
发明人
分类号
E21B;E21B43/28;(IPC1-7):E21B43/28
主分类号
E21B
代理机构
代理人
主权项
地址
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