Endless chain of counting relays,申请号US19490135802-传众专利搜索

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发明名称	Endless chain of counting relays
摘要
申请公布号	US2574904(A)	申请公布日期	1951.11.13
申请号	US19490135802	申请日期	1949.12.29
申请人	KELLOGG SWITCHBOARD AND SUPPLY COMPANY	发明人	BELLAMY JOHN I.
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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