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发明名称
VACUUM PUMP
摘要
申请公布号
CA329628(A)
申请公布日期
1933.01.24
申请号
CAD329628
申请日期
申请人
C. A. DUNHAM COMPANY
发明人
DAVID N. CROSTHWAIT, JR.
分类号
主分类号
代理机构
代理人
主权项
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