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经营范围
发明名称
Progressive Brillenlinse.
摘要
申请公布号
DE3751443(T2)
申请公布日期
1996.02.01
申请号
DE19873751443T
申请日期
1987.12.18
申请人
AMERICAN OPTICAL CORP., SOUTHBRIDGE, MASS., US
发明人
WINTHROP, JOHN T., WELLESLEY, MASS., US
分类号
G02C7/06;G02C7/02;(IPC1-7):G02C7/02
主分类号
G02C7/06
代理机构
代理人
主权项
地址
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