Safety device for motion picture projectors,申请号US19400361456-传众专利搜索

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发明名称	Safety device for motion picture projectors
摘要
申请公布号	US2288400(A)	申请公布日期	1942.06.30
申请号	US19400361456	申请日期	1940.10.16
申请人	HULL HERBERT H;BARTON JR JOSEPH FRED	发明人	HULL HERBERT H.;JR. JOSEPH FRED BARTON,
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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