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发明名称
APERFEICOAMENTO EM INSTRUMENTO OPTICO DE AUXILIO VISUAL PARA LEITURA
摘要
申请公布号
BR8107107(A)
申请公布日期
1982.03.16
申请号
BR19810007107
申请日期
1981.10.29
申请人
HEINZ KONRAD
发明人
HEINZ KONRAD
分类号
G02C3/04;(IPC1-7):G02C3/04
主分类号
G02C3/04
代理机构
代理人
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地址
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