Automatic balancing system,申请号US19390286505-传众专利搜索

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发明名称	Automatic balancing system
摘要
申请公布号	US2237929(A)	申请公布日期	1941.04.08
申请号	US19390286505	申请日期	1939.07.26
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	CUMMINGS GEORGE C.
分类号	H04L5/14	主分类号	H04L5/14
代理机构		代理人
主权项
地址

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