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发明名称
Improvements in or relating to Vacuum Systems
摘要
申请公布号
GB1173429(A)
申请公布日期
1969.12.10
申请号
GB19670033444
申请日期
1967.07.20
申请人
BIR-VAC LIMITED
发明人
KENNETH BRIGGS CRASWELL
分类号
B01J3/00;C23C14/56
主分类号
B01J3/00
代理机构
代理人
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