Film winding device for projectors,申请号US19570689815-传众专利搜索

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发明名称	Film winding device for projectors
摘要
申请公布号	US2914265(A)	申请公布日期	1959.11.24
申请号	US19570689815	申请日期	1957.10.14
申请人	WHITE-RODGERS COMPANY	发明人	JR. FRANK E. VANDERWAL,
分类号	G03B21/43	主分类号	G03B21/43
代理机构		代理人
主权项
地址

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