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发明名称
Means for constructing filter bottoms
摘要
申请公布号
US2401121(A)
申请公布日期
1946.05.28
申请号
US19440567716
申请日期
1944.12.11
申请人
BUILDERS IRON FOUNDRY
发明人
THORESEN JOHN C.
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主分类号
代理机构
代理人
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