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发明名称
METHODS OF AND APPARATUS FOR WORKING MINERAL MATERIALS AND THE LIKE
摘要
申请公布号
CA475976(A)
申请公布日期
1951.08.07
申请号
CAD475976
申请日期
申请人
DOMINION OXYGEN COMPANY
发明人
CHARLES J. BURCH
分类号
主分类号
代理机构
代理人
主权项
地址
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