Method and means for determining magnetic polarity,申请号US19370122164-传众专利搜索

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发明名称	Method and means for determining magnetic polarity
摘要
申请公布号	US2104752(A)	申请公布日期	1938.01.11
申请号	US19370122164	申请日期	1937.01.25
申请人	STANDARD OIL COMPANY	发明人	LYNTON EDWARD D.;HERRICK HENRY N.
分类号	G01V3/00	主分类号	G01V3/00
代理机构		代理人
主权项
地址

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