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发明名称
Helically threaded rotors for screw type pumps, compressors and similar devices
摘要
申请公布号
GB1085821(A)
申请公布日期
1967.10.04
申请号
GB19650005065
申请日期
1965.02.05
申请人
JOSEPH EARL WHITFIELD
发明人
分类号
F01C1/08;F01C1/16;F04C18/08
主分类号
F01C1/08
代理机构
代理人
主权项
地址
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