IMPROVEMENTS IN AND RELATING TO VIEWFINDERS,申请号GB19690047031-传众专利搜索

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发明名称	IMPROVEMENTS IN AND RELATING TO VIEWFINDERS
摘要
申请公布号	GB1221908(A)	申请公布日期	1971.02.10
申请号	GB19690047031	申请日期	1969.09.24
申请人	KABUSHIKI KAISHA RICOH	发明人
分类号	G03B19/12	主分类号	G03B19/12
代理机构		代理人
主权项
地址

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