Direct current switching device,申请号US19310509301-传众专利搜索

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发明名称	Direct current switching device
摘要
申请公布号	US1910508(A)	申请公布日期	1933.05.23
申请号	US19310509301	申请日期	1931.01.17
申请人	EAGLE SIGNAL SALES CORPORATION	发明人	TURNER HARRISON I.;FREEBERG ERNEST R.
分类号	H01H3/00	主分类号	H01H3/00
代理机构		代理人
主权项
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