Refractory element for electric heaters,申请号US19450621414-传众专利搜索

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发明名称	Refractory element for electric heaters
摘要
申请公布号	US2469287(A)	申请公布日期	1949.05.03
申请号	US19450621414	申请日期	1945.10.10
申请人	FRANK YOKEL	发明人	YOKEL FRANK
分类号	H05B3/16	主分类号	H05B3/16
代理机构		代理人
主权项
地址

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