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发明名称
BLOQUEADOR DE CHAMADAS TELEFONICAS A COBRAR
摘要
申请公布号
BR8502862(A)
申请公布日期
1987.01.21
申请号
BR1985PI02862
申请日期
1985.06.11
申请人
ILDEFONSO COLVARA ALVES
发明人
ILDEFONSO COLVARA ALVES
分类号
H04M1/66;(IPC1-7):H04M1/66
主分类号
H04M1/66
代理机构
代理人
主权项
地址
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