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摘要
申请公布号
US2296566(A)
申请公布日期
1942.09.22
申请号
US19390287970
申请日期
1939.08.02
申请人
WILLY NEUMANN
发明人
NEUMANN WILLY
分类号
B01D46/00
主分类号
B01D46/00
代理机构
代理人
主权项
地址
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