Improvements in impulse transmitters for automatic telephone systems,申请号GB19340033576-传众专利搜索

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发明名称	Improvements in impulse transmitters for automatic telephone systems
摘要
申请公布号	GB432334(A)	申请公布日期	1935.07.24
申请号	GB19340033576	申请日期	1934.11.22
申请人	JACQUES SERVANTON;JEAN-MARIE CONSAEEL	发明人
分类号	H04M1/274	主分类号	H04M1/274
代理机构		代理人
主权项
地址

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