LOCATABLE OBJECT SUITABLE FOR UNDERGROUND USE AND METHOD OF LOCATING THE SAME,申请号KR19900022569-传众专利搜索

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发明名称	LOCATABLE OBJECT SUITABLE FOR UNDERGROUND USE AND METHOD OF LOCATING THE SAME
摘要
申请公布号	KR0147811(B1)	申请公布日期	1998.08.17
申请号	KR19900022569	申请日期	1990.12.28
申请人	AT & T CORPORATION	发明人	DAVIS, DONALD D.;PESTO, WILLIAM STEVE;R.J. SCHEPIS;TURNER, LOYCE A,
分类号	G01V15/00;G02B6/44;(IPC1-7):G01V3/11	主分类号	G01V15/00
代理机构		代理人
主权项
地址

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