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发明名称
APPARATUS FOR PRODUCING ROCK WOOL
摘要
申请公布号
CA472411(A)
申请公布日期
1951.03.27
申请号
CAD472411
申请日期
申请人
OLIVER J. NELSON
发明人
OLIVER J. NELSON
分类号
主分类号
代理机构
代理人
主权项
地址
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