,申请号GBD1238420-传众专利搜索

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发明名称
摘要
申请公布号	GB1238420(A)	申请公布日期	1971.07.07
申请号	GBD1238420	申请日期	1969.09.19
申请人		发明人
分类号	G04B19/20;G04B27/00	主分类号	G04B19/20
代理机构		代理人
主权项
地址

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