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发明名称
GRADUALLY PROGRESSIVE MULTIFOCUS LENS
摘要
申请公布号
JPH01142709(A)
申请公布日期
1989.06.05
申请号
JP19870302495
申请日期
1987.11.30
申请人
ASAHI OPTICAL CO LTD
发明人
SHIRAYANAGI MORIYASU
分类号
G02C7/06;G02B3/10;G02B5/18;G02C7/02
主分类号
G02C7/06
代理机构
代理人
主权项
地址
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