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发明名称
Device to aid pumping of volatile gases
摘要
申请公布号
US3304730(A)
申请公布日期
1967.02.21
申请号
US19650462538
申请日期
1965.06.09
申请人
GORHAM ROBERT B
发明人
GORHAM ROBERT B.
分类号
F17C7/02
主分类号
F17C7/02
代理机构
代理人
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