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发明名称
Revivifying fuller's earth
摘要
申请公布号
US2000973(A)
申请公布日期
1935.05.14
申请号
US19330653148
申请日期
1933.01.23
申请人
BERT MANROSS
发明人
MANROSS BERT
分类号
B01J20/12
主分类号
B01J20/12
代理机构
代理人
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地址
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