Universal collapsible transparency viewer,申请号US19560582891-传众专利搜索

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发明名称	Universal collapsible transparency viewer
摘要
申请公布号	US2872844(A)	申请公布日期	1959.02.10
申请号	US19560582891	申请日期	1956.05.04
申请人	TUYL SIDNEY VAN	发明人	TUYL SIDNEY VAN
分类号	G02B27/22	主分类号	G02B27/22
代理机构		代理人
主权项
地址

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