Film rewind device,申请号US19380239212-传众专利搜索

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发明名称	Film rewind device
摘要
申请公布号	US2182944(A)	申请公布日期	1939.12.12
申请号	US19380239212	申请日期	1938.11.07
申请人	GOLDBERG JACOB M	发明人	GOLDBERG JACOB M.
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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