Motion picture apparatus,申请号US19260109962-传众专利搜索

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发明名称	Motion picture apparatus
摘要
申请公布号	US1821946(A)	申请公布日期	1931.09.08
申请号	US19260109962	申请日期	1926.05.18
申请人	OWENS FREEMAN H	发明人	OWENS FREEMAN H.
分类号	G03B21/32;G03B21/44	主分类号	G03B21/32
代理机构		代理人
主权项
地址

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