Improvements in method of and means for making multifocal lenses,申请号GB19340027473-传众专利搜索

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发明名称	Improvements in method of and means for making multifocal lenses
摘要
申请公布号	GB428270(A)	申请公布日期	1935.05.09
申请号	GB19340027473	申请日期	1934.09.25
申请人	BAUSCH & LOMB OPTICAL CO.	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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