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经营范围
发明名称
Progressive power lens.
摘要
申请公布号
EP0668524(A3)
申请公布日期
1999.07.28
申请号
EP19950300939
申请日期
1995.02.15
申请人
BMC INDUSTRIES, INC.
发明人
KITCHEN, GEORGE A.
分类号
G02C7/02;(IPC1-7):G02C7/02
主分类号
G02C7/02
代理机构
代理人
主权项
地址
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