METHOD AND SYSTEM FOR AUTOMATIC MEASUREMENT OF TIME CHANGES OF ULTRASONIC WAVE PASSAGE,申请号PL19860261299-传众专利搜索

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发明名称	METHOD AND SYSTEM FOR AUTOMATIC MEASUREMENT OF TIME CHANGES OF ULTRASONIC WAVE PASSAGE
摘要
申请公布号	PL154711(B1)	申请公布日期	1991.09.30
申请号	PL19860261299	申请日期	1986.09.05
申请人		发明人
分类号	G01H5/00;G01N;(IPC1-7):G01N29/18	主分类号	G01H5/00
代理机构		代理人
主权项
地址

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