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发明名称
ELEMENTO APERFEICOADO DE COBERTURA
摘要
申请公布号
BR8001073(A)
申请公布日期
1981.08.25
申请号
BR19800001073
申请日期
1980.02.21
申请人
BERALDO P
发明人
BERALDO P
分类号
E04D1/30;(IPC1-7):E04D1/30
主分类号
E04D1/30
代理机构
代理人
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地址
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