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发明名称
Portable collapsible fume extractor
摘要
申请公布号
US2348455(A)
申请公布日期
1944.05.09
申请号
US19410412497
申请日期
1941.09.26
申请人
DAUDELIN ARTHUR T
发明人
DAUDELIN ARTHUR T.
分类号
F24F7/06
主分类号
F24F7/06
代理机构
代理人
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地址
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