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经营范围
发明名称
Improvements in or relating to vacuum pumps
摘要
申请公布号
GB747080(A)
申请公布日期
1956.03.28
申请号
GB19540022900
申请日期
1954.08.06
申请人
WESTINGHOUSE ELECTRIC INTERNATIONAL COMPANY
发明人
分类号
H01J41/16
主分类号
H01J41/16
代理机构
代理人
主权项
地址
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