Film gate,申请号US19340714570-传众专利搜索

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发明名称	Film gate
摘要
申请公布号	US2037453(A)	申请公布日期	1936.04.14
申请号	US19340714570	申请日期	1934.03.08
申请人	INTERNATIONAL PROJECTOR CORPORATION	发明人	BOECKING EWALD
分类号	G03B1/56	主分类号	G03B1/56
代理机构		代理人
主权项
地址

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