Condition-responsive system for impressing distinctive frequency alarm tone on transmission line,申请号US19640418115-传众专利搜索

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发明名称	Condition-responsive system for impressing distinctive frequency alarm tone on transmission line
摘要
申请公布号	US3357009(A)	申请公布日期	1967.12.05
申请号	US19640418115	申请日期	1964.12.14
申请人	PETER MILLER;WILLIAM MILLER	发明人	RUSNAK MAURICE;MILLER WILLIAM;MILLER PETER
分类号	H04M11/04	主分类号	H04M11/04
代理机构		代理人
主权项
地址

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