Electromagnetic switching device,申请号US19350041029-传众专利搜索

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发明名称	Electromagnetic switching device
摘要
申请公布号	US2089320(A)	申请公布日期	1937.08.10
申请号	US19350041029	申请日期	1935.09.18
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	WORTH JOHN B.
分类号	H01H51/08	主分类号	H01H51/08
代理机构		代理人
主权项
地址

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