Film envelope,申请号US19370157440-传众专利搜索

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发明名称	Film envelope
摘要
申请公布号	US2137379(A)	申请公布日期	1938.11.22
申请号	US19370157440	申请日期	1937.08.04
申请人	BILLING	发明人	BILLING NOEL PEMBERTON;TAPPER AMBROSE HENRY
分类号	G03B17/34	主分类号	G03B17/34
代理机构		代理人
主权项
地址

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