Pulse counting relay system,申请号US19460641155-传众专利搜索

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发明名称	Pulse counting relay system
摘要
申请公布号	US2439405(A)	申请公布日期	1948.04.13
申请号	US19460641155	申请日期	1946.01.14
申请人	ZIERDT JR CONRAD H	发明人	JR. CONRAD H. ZIERDT,
分类号	H03K23/74	主分类号	H03K23/74
代理机构		代理人
主权项
地址

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