Electrical apparatus and methods,申请号US19540422842-传众专利搜索

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发明名称	Electrical apparatus and methods
摘要
申请公布号	US2982256(A)	申请公布日期	1961.05.02
申请号	US19540422842	申请日期	1954.04.13
申请人	JONES LITTLEFIELD EFLIE DORA	发明人	LITTLEFIELD EFLIE DORA JONES
分类号	F16K31/02;F16K31/10	主分类号	F16K31/02
代理机构		代理人
主权项
地址

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