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经营范围
发明名称
Improvements in and relating to sealing off glass tubes, such as exhaust tubes of evacuated vessels
摘要
申请公布号
GB726097(A)
申请公布日期
1955.03.16
申请号
GB19530006827
申请日期
1953.03.12
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
H01J9/40
主分类号
H01J9/40
代理机构
代理人
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地址
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