Motion picture machine,申请号US19370127020-传众专利搜索

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发明名称	Motion picture machine
摘要
申请公布号	US2131850(A)	申请公布日期	1938.10.04
申请号	US19370127020	申请日期	1937.02.23
申请人	WALL JOHN M	发明人	WALL JOHN M.
分类号	G03B21/46	主分类号	G03B21/46
代理机构		代理人
主权项
地址

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