Protective system and method,申请号US19340758171-传众专利搜索

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发明名称	Protective system and method
摘要
申请公布号	US2066522(A)	申请公布日期	1937.01.05
申请号	US19340758171	申请日期	1934.12.19
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	DOHERTY WILLIAM H.
分类号	H03F1/54	主分类号	H03F1/54
代理机构		代理人
主权项
地址

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