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发明名称
FILTER
摘要
申请公布号
CA324095(A)
申请公布日期
1932.07.12
申请号
CAD324095
申请日期
申请人
THE BUTLER MANUFACTURING COMPANY
发明人
VICTOR CARL NORQUIST;EARL EDWIN TREANOR
分类号
主分类号
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代理人
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