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发明名称
Improvements in or relating to vacuum pumping apparatus
摘要
申请公布号
GB815070(A)
申请公布日期
1959.06.17
申请号
GB19560002530
申请日期
1956.01.25
申请人
EDWARDS HIGH VACUUM LIMITED
发明人
BARRETT ARTHUR STEPHEN DENNIS
分类号
F04F9/00
主分类号
F04F9/00
代理机构
代理人
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