Improvements in or relating to Telephone Headsets.,申请号GB19670031688-传众专利搜索

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发明名称	Improvements in or relating to Telephone Headsets.
摘要
申请公布号	GB1179946(A)	申请公布日期	1970.02.04
申请号	GB19670031688	申请日期	1967.07.10
申请人	S. G. BROWN LIMITED;JOHN SLOAN	发明人	JOHN SLOAN
分类号	H04M1/05	主分类号	H04M1/05
代理机构		代理人
主权项
地址

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