Electrical protective system,申请号US19300477170-传众专利搜索

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发明名称	Electrical protective system
摘要
申请公布号	US1879773(A)	申请公布日期	1932.09.27
申请号	US19300477170	申请日期	1930.08.22
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	SWART LELAND K.
分类号	H02H9/04	主分类号	H02H9/04
代理机构		代理人
主权项
地址

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