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发明名称
APERFEICOAMENTO EM VALVULA
摘要
申请公布号
BR5800247(U)
申请公布日期
1978.11.21
申请号
BR19780000247U
申请日期
1978.03.02
申请人
COSTELLA P
发明人
COSTELLA P
分类号
E03D3/04;F16K21/04;(IPC1-7):E03D3/04
主分类号
E03D3/04
代理机构
代理人
主权项
地址
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