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发明名称
Vacuum pump
摘要
申请公布号
US2049872(A)
申请公布日期
1936.08.04
申请号
US19340746105
申请日期
1934.09.29
申请人
SHINICHI SERA
发明人
SERA SHINICHI
分类号
B65B31/04
主分类号
B65B31/04
代理机构
代理人
主权项
地址
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