Film threading means for projector apparatus,申请号US19500145396-传众专利搜索

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发明名称	Film threading means for projector apparatus
摘要
申请公布号	US2632361(A)	申请公布日期	1953.03.24
申请号	US19500145396	申请日期	1950.02.21
申请人	KROWS ARTHUR E	发明人	KROWS ARTHUR E.
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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