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发明名称
Method and apparatus for removing dense from lighter material
摘要
申请公布号
US2751633(A)
申请公布日期
1956.06.26
申请号
US19490114942
申请日期
1949.09.10
申请人
A. B. DICK COMPANY
发明人
CLARK JAMES D'A.
分类号
D01G25/00
主分类号
D01G25/00
代理机构
代理人
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