Film drag applying device,申请号US19310540369-传众专利搜索

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发明名称	Film drag applying device
摘要
申请公布号	US2064570(A)	申请公布日期	1936.12.15
申请号	US19310540369	申请日期	1931.05.27
申请人	RADIO CORPORATION OF AMERICA	发明人	SCHULZ WALTER ALBERT
分类号	G03B31/02	主分类号	G03B31/02
代理机构		代理人
主权项
地址

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