Film shrinkage adjusting, focusing, and masking unit for revolving lens wheel system,申请号US19500175816-传众专利搜索

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发明名称	Film shrinkage adjusting, focusing, and masking unit for revolving lens wheel system
摘要
申请公布号	US2713285(A)	申请公布日期	1955.07.19
申请号	US19500175816	申请日期	1950.07.25
申请人	HOLMAN ARTHUR J	发明人	HOLMAN ARTHUR J.
分类号	G03B21/46	主分类号	G03B21/46
代理机构		代理人
主权项
地址

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