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发明名称
Filter drive unit
摘要
申请公布号
US2143842(A)
申请公布日期
1939.01.17
申请号
US19370172018
申请日期
1937.10.30
申请人
CHRISTIAN JOSEPH D
发明人
CHRISTIAN JOSEPH D.
分类号
B01D33/00
主分类号
B01D33/00
代理机构
代理人
主权项
地址
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