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发明名称
RETENTAR PARA TUBO DE TROCA DE CALOR E APARELHO TROCADOR DE CALOR
摘要
申请公布号
BR8701438(A)
申请公布日期
1987.12.29
申请号
BR1987PI01438
申请日期
1987.03.30
申请人
DEERE & COMPANY
发明人
DAVID JOSEPH EASTON
分类号
F16L3/13;F16L3/223;F28F9/00;F28F9/013;(IPC1-7):F28F1/00
主分类号
F16L3/13
代理机构
代理人
主权项
地址
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