Telephone system,申请号US19320596303-传众专利搜索

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发明名称	Telephone system
摘要
申请公布号	US1893323(A)	申请公布日期	1933.01.03
申请号	US19320596303	申请日期	1932.03.02
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	CROCKER THOMAS F.
分类号	H04Q5/00	主分类号	H04Q5/00
代理机构		代理人
主权项
地址

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