Telephone sub-station including transistors,申请号GB19570018863-传众专利搜索

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发明名称	Telephone sub-station including transistors
摘要
申请公布号	GB811413(A)	申请公布日期	1959.04.02
申请号	GB19570018863	申请日期	1957.06.14
申请人	AUTOPHON AKTIENGESELLSCHAFT	发明人
分类号	H04M1/74	主分类号	H04M1/74
代理机构		代理人
主权项
地址

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