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发明名称
Method for detecting a state of substance existing in pipe
摘要
申请公布号
US4886370(A)
申请公布日期
1989.12.12
申请号
US19880229835
申请日期
1988.08.08
申请人
NKK CORPORATION
发明人
KOSHIHARA, TOSHIO;MISAWA, ROKUROU;SAGAWA, YUZO;TAKEHARA, KIMIO
分类号
G01N25/72
主分类号
G01N25/72
代理机构
代理人
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