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经营范围
发明名称
Installation de ventilateurs de mines
摘要
申请公布号
FR1287312(A)
申请公布日期
1962.03.16
申请号
FR19580781916
申请日期
1958.12.17
申请人
发明人
GRAFER ALBRECHT;NUESSE HUGO
分类号
E21F1/00
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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