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发明名称
Rotary pump or compressor
摘要
申请公布号
US1906142(A)
申请公布日期
1933.04.25
申请号
US19310579245
申请日期
1931.12.05
申请人
JOHN EKELOF
发明人
EKELOF JOHN
分类号
F04C2/04;F04C15/00
主分类号
F04C2/04
代理机构
代理人
主权项
地址
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