Light guard for motion picture projection machines,申请号US19290351206-传众专利搜索

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发明名称	Light guard for motion picture projection machines
摘要
申请公布号	US1820054(A)	申请公布日期	1931.08.25
申请号	US19290351206	申请日期	1929.03.30
申请人	INTERNATIONAL PROJECTOR CORPORATION	发明人	DINA AUGUSTO
分类号	G03B15/08	主分类号	G03B15/08
代理机构		代理人
主权项
地址

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