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发明名称
Improvements in or relating to rotary vacuum pumps
摘要
申请公布号
GB876857(A)
申请公布日期
1961.09.06
申请号
GB19570038298
申请日期
1957.12.10
申请人
BASIC PRODUCTS CORPORATION
发明人
分类号
F04C18/344;F04C25/00;F04C29/02
主分类号
F04C18/344
代理机构
代理人
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地址
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