Magnetic permeability indicator,申请号US19400365175-传众专利搜索

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发明名称	Magnetic permeability indicator
摘要
申请公布号	US2318666(A)	申请公布日期	1943.05.11
申请号	US19400365175	申请日期	1940.11.12
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	BRUCE WILLIAM A.
分类号	G01K7/38	主分类号	G01K7/38
代理机构		代理人
主权项
地址

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