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发明名称
BRILLENGLAS MIT ZUNEHMENDER BRENNPUNKTVERSTAERKUNG
摘要
申请公布号
DE8104023(U1)
申请公布日期
1983.06.09
申请号
DE19810004023U
申请日期
1981.02.13
申请人
ITEK CORP., LEXINGTON, MASS., US
发明人
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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