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经营范围
发明名称
Improvements in or relating to electric discharge valves
摘要
申请公布号
GB797964(A)
申请公布日期
1958.07.09
申请号
GB19560009932
申请日期
1956.03.29
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
H01J1/16
主分类号
H01J1/16
代理机构
代理人
主权项
地址
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