Improvements in or relating to impulse transmitters for use in telephone or like systems,申请号GB19300027509-传众专利搜索

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发明名称	Improvements in or relating to impulse transmitters for use in telephone or like systems
摘要
申请公布号	GB363313(A)	申请公布日期	1931.12.15
申请号	GB19300027509	申请日期	1930.09.15
申请人	ASSOCIATED TELEPHONE & TELEGRAPH COMPANY	发明人
分类号	H04M1/23	主分类号	H04M1/23
代理机构		代理人
主权项
地址

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