Fernsprechsystem.,申请号ATD146764-传众专利搜索

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发明名称	Fernsprechsystem.
摘要
申请公布号	AT146764(B)	申请公布日期	1936.08.10
申请号	ATD146764	申请日期	1934.11.08
申请人	LEONARD ERNEST RYALL	发明人	LEONARD ERNEST RYALL
分类号		主分类号
代理机构		代理人
主权项
地址

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