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发明名称
REGUA ARITMETICA
摘要
申请公布号
BR6100379(U)
申请公布日期
1982.11.03
申请号
BR19810000379U
申请日期
1981.03.24
申请人
STRELNIEK OCTAVIO WALDEMAR
发明人
STRELNIEK OCTAVIO WALDEMAR
分类号
G06G1/06;(IPC1-7):G06G1/06
主分类号
G06G1/06
代理机构
代理人
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