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发明名称
HEAT-INSULATING DOUBLE PIPE FOR OIL WELL PIPE
摘要
申请公布号
JPS63101599(A)
申请公布日期
1988.05.06
申请号
JP19860247043
申请日期
1986.10.16
申请人
SUMITOMO METAL IND LTD
发明人
ISHIHARA KOICHIRO;KAWASHIMA JUICHI
分类号
F16L59/14;F16L59/147
主分类号
F16L59/14
代理机构
代理人
主权项
地址
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