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发明名称
Positive transfer rotary pumps
摘要
申请公布号
GB769378(A)
申请公布日期
1957.03.06
申请号
GB19550013200
申请日期
1955.05.06
申请人
GUIDO LE GRAZIE
发明人
分类号
F04C2/40;F04C2/44;F04C5/00
主分类号
F04C2/40
代理机构
代理人
主权项
地址
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