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经营范围
发明名称
Improvements in or relating to rotary vacuum pumps
摘要
申请公布号
GB991570(A)
申请公布日期
1965.05.12
申请号
GB19620022233
申请日期
1962.06.08
申请人
LEYBOLD HOLDING AKTIENGESELLSCHAFT
发明人
分类号
F04B39/16;F04C29/02
主分类号
F04B39/16
代理机构
代理人
主权项
地址
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