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经营范围
发明名称
Arrangement for securing the cap to a vessel enclosing the electrode system of an electron tube
摘要
申请公布号
GB649410(A)
申请公布日期
1951.01.24
申请号
GB19480025433
申请日期
1948.09.29
申请人
"WATT" GLUHLAMPEN - UND ELEKTRIZITATS - AKTIENGESELLSCHAFT
发明人
分类号
H01J5/58;H01J19/66
主分类号
H01J5/58
代理机构
代理人
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地址
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