Production of multifocal lens blanks,申请号GB19580024380-传众专利搜索

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发明名称	Production of multifocal lens blanks
摘要
申请公布号	GB855395(A)	申请公布日期	1960.11.30
申请号	GB19580024380	申请日期	1958.07.29
申请人	PITTSBURGH PLATE GLASS COMPANY	发明人
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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