Improvements in or relating to electrical signalling systems,申请号GB19430016553-传众专利搜索

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发明名称	Improvements in or relating to electrical signalling systems
摘要
申请公布号	GB568622(A)	申请公布日期	1945.04.12
申请号	GB19430016553	申请日期	1943.10.09
申请人	AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED;LANCELOT MARTIN SIMPSON	发明人
分类号	B64F1/00	主分类号	B64F1/00
代理机构		代理人
主权项
地址

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