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发明名称
METHOD OF REDUCING FRICTION RESISTANCE OF BURIED REMOVING PIPE
摘要
申请公布号
JPS6246075(A)
申请公布日期
1987.02.27
申请号
JP19850181638
申请日期
1985.08.21
申请人
NIPPON KOKAN KK <NKK>;JAPAN STEEL & TUBE CONSTR CO LTD
发明人
MISAWA ROKURO;OBATA YASUO;SATO TAKUO;ASANO SHOJI;ICHIOKA YUJI
分类号
F16L1/024;E21D9/06;F16L1/00
主分类号
F16L1/024
代理机构
代理人
主权项
地址
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