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发明名称
Extractor
摘要
申请公布号
US1988468(A)
申请公布日期
1935.01.22
申请号
US19320621592
申请日期
1932.07.09
申请人
WOODWARD WILLIAM H
发明人
WOODWARD WILLIAM H.
分类号
D06F47/06
主分类号
D06F47/06
代理机构
代理人
主权项
地址
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