IMPROVEMENTS IN OR RELATING TO PRIVATE TELEPHONE EXCHANGES,申请号GB19670001757-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO PRIVATE TELEPHONE EXCHANGES
摘要
申请公布号	GB1218344(A)	申请公布日期	1971.01.06
申请号	GB19670001757	申请日期	1967.01.12
申请人	THE GENERAL ELECTRIC COMPANY LIMITED	发明人	RONALD SMITHERS
分类号	H04Q3/62	主分类号	H04Q3/62
代理机构		代理人
主权项
地址

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