Process of making a multifocal lens blank,申请号US19520319569-传众专利搜索

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发明名称	Process of making a multifocal lens blank
摘要
申请公布号	US2885828(A)	申请公布日期	1959.05.12
申请号	US19520319569	申请日期	1952.11.08
申请人	ALFRED EMERSON STANLEY	发明人	EMERSON STANLEY ALFRED
分类号	C03B23/22	主分类号	C03B23/22
代理机构		代理人
主权项
地址

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