Photographic gates for film,申请号US19310524052-传众专利搜索

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发明名称	Photographic gates for film
摘要
申请公布号	US1933783(A)	申请公布日期	1933.11.07
申请号	US19310524052	申请日期	1931.03.20
申请人	EASTMAN KODAK COMPANY	发明人	WITTEL OTTO
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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