Projector and viewing screen,申请号US19390294224-传众专利搜索

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发明名称	Projector and viewing screen
摘要
申请公布号	US2326042(A)	申请公布日期	1943.08.03
申请号	US19390294224	申请日期	1939.09.11
申请人	STEPHEN JUNKUNC, JR.	发明人	LESSMAN GERHARD
分类号	G03B21/11;G03B21/62	主分类号	G03B21/11
代理机构		代理人
主权项
地址

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