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经营范围
发明名称
Tube thermoionique
摘要
申请公布号
FR1183548(A)
申请公布日期
1959.07.08
申请号
FRD1183548
申请日期
1957.09.28
申请人
THE M-O VALVE COMPANY LIMITED
发明人
分类号
H01J1/28
主分类号
H01J1/28
代理机构
代理人
主权项
地址
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