Photography and projection apparatus,申请号US19530390644-传众专利搜索

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法人/股东/高管

发明名称	Photography and projection apparatus
摘要
申请公布号	US2882782(A)	申请公布日期	1959.04.21
申请号	US19530390644	申请日期	1953.11.06
申请人	WELCH EARL M	发明人	WELCH EARL M.
分类号	G03B19/18	主分类号	G03B19/18
代理机构		代理人
主权项
地址

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