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发明名称
PROGRESSIVE FOCUS LENS FOR SPECTACLES
摘要
申请公布号
JPH03230114(A)
申请公布日期
1991.10.14
申请号
JP19900025515
申请日期
1990.02.05
申请人
SEIKO EPSON CORP
发明人
KATO KAZUHISA
分类号
G02C7/06;G02B3/10
主分类号
G02C7/06
代理机构
代理人
主权项
地址
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