Time division tone signaling system,申请号US19640417390-传众专利搜索

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发明名称	Time division tone signaling system
摘要
申请公布号	US3350509(A)	申请公布日期	1967.10.31
申请号	US19640417390	申请日期	1964.12.10
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	LEE ROBERT C.;SOFFEL ROBERT O.;VIGLIANTE FRANK S.
分类号	H04Q11/04	主分类号	H04Q11/04
代理机构		代理人
主权项
地址

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