Projector and gate mechanism therefor,申请号US19390288296-传众专利搜索

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发明名称	Projector and gate mechanism therefor
摘要
申请公布号	US2232811(A)	申请公布日期	1941.02.25
申请号	US19390288296	申请日期	1939.08.04
申请人	REVERE CAMERA COMPANY	发明人	SPERRY PHILMORE F.
分类号	G03B1/56	主分类号	G03B1/56
代理机构		代理人
主权项
地址

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