Film flame stop,申请号US19290389271-传众专利搜索

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发明名称	Film flame stop
摘要
申请公布号	US1827010(A)	申请公布日期	1931.10.13
申请号	US19290389271	申请日期	1929.08.29
申请人	KOHLMEYER LAWRENCE D	发明人	KOHLMEYER LAWRENCE D.
分类号	G03B21/18	主分类号	G03B21/18
代理机构		代理人
主权项
地址

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