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发明名称
Piedra moldeada que forma una sección tubular para conductos de gases del humo dispuestos verticalmente en instalaciones de intercambio de calor.
摘要
申请公布号
ES7004(U)
申请公布日期
1942.03.16
申请号
ES19040000070U
申请日期
1941.11.27
申请人
ECKERT, FRITZ
发明人
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主分类号
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