Method of superimposing alpha foreground or image upon alpha background in photography,申请号US19270169173-传众专利搜索

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发明名称	Method of superimposing alpha foreground or image upon alpha background in photography
摘要
申请公布号	US1928579(A)	申请公布日期	1933.09.26
申请号	US19270169173	申请日期	1927.02.18
申请人	CINEMA DEVELOPMENT COMPANY	发明人	WALKER WALTER D.
分类号	G03B15/08	主分类号	G03B15/08
代理机构		代理人
主权项
地址

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