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发明名称
Vacuum and air pumps
摘要
申请公布号
US3099387(A)
申请公布日期
1963.07.30
申请号
US19600044418
申请日期
1960.07.21
申请人
BECKFIELD FRANKLIN H
发明人
BECKFIELD FRANKLIN H.
分类号
F04C18/344;F04C29/02
主分类号
F04C18/344
代理机构
代理人
主权项
地址
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