Apparatus for detecting faults in buried cables including means for applying a composite signal having fundamental and even harmonic frequency components,申请号US19640355216-传众专利搜索

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发明名称	Apparatus for detecting faults in buried cables including means for applying a composite signal having fundamental and even harmonic frequency components
摘要
申请公布号	US3299351(A)	申请公布日期	1967.01.17
申请号	US19640355216	申请日期	1964.03.27
申请人	NORTHERN ELECTRIC COMPANY, LIMITED	发明人	WILLIAMS DEWI L.
分类号	G01R31/02	主分类号	G01R31/02
代理机构		代理人
主权项
地址

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