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发明名称
Improvements in apparatus for recovering gold, silver, platinum and the like, from gravel, sand and other deposits
摘要
申请公布号
GB383843(A)
申请公布日期
1932.11.24
申请号
GB19320007492
申请日期
1932.03.14
申请人
BERNARD FREDERICK MITCHELL
发明人
分类号
B03B5/08
主分类号
B03B5/08
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