Способ взаимной блокировки спаренных телефонных аппаратов,申请号SU19550452358-传众专利搜索

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发明名称	Способ взаимной блокировки спаренных телефонных аппаратов
摘要
申请公布号	SU103301(A1)	申请公布日期	1955.11.30
申请号	SU19550452358	申请日期	1955.04.25
申请人	FARAFONOV L.S.	发明人	FARAFONOV L.S.
分类号	H04M1/70;H04M3/16	主分类号	H04M1/70
代理机构		代理人
主权项
地址

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