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发明名称
Vacuum exhaust
摘要
申请公布号
US2575698(A)
申请公布日期
1951.11.20
申请号
US19480015891
申请日期
1948.03.19
申请人
WILSON JOHN H
发明人
WILSON JOHN H.
分类号
F01N13/12
主分类号
F01N13/12
代理机构
代理人
主权项
地址
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