Picture projecting and viewing apparatus,申请号US19310557286-传众专利搜索

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发明名称	Picture projecting and viewing apparatus
摘要
申请公布号	US1981922(A)	申请公布日期	1934.11.27
申请号	US19310557286	申请日期	1931.08.15
申请人	ELECTRIC AND MUSICAL INDUSTRIES LIMITED	发明人	BOWMAN-MANIFOLD MICHAEL
分类号	G03B41/06	主分类号	G03B41/06
代理机构		代理人
主权项
地址

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