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发明名称
PROGRESSIVE POWER OPHTHALMIC LENS
摘要
申请公布号
HK22481(A)
申请公布日期
1981.05.29
申请号
HK19810000224
申请日期
1981.05.21
申请人
AMERICAN OPTICAL CORP
发明人
WINTHROP J T
分类号
B24B13/00;C03B23/035;C03B23/22;G02C7/02;(IPC1-7):G02C7/06
主分类号
B24B13/00
代理机构
代理人
主权项
地址
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