Multi-stage heating element control,申请号US19560563884-传众专利搜索

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发明名称	Multi-stage heating element control
摘要
申请公布号	US2977451(A)	申请公布日期	1961.03.28
申请号	US19560563884	申请日期	1956.02.07
申请人	CAMPBELL JAMES R	发明人	CAMPBELL JAMES R.
分类号	F23Q7/00;H01H37/64	主分类号	F23Q7/00
代理机构		代理人
主权项
地址

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