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经营范围
发明名称
Perfectionnements aux tubes à décharge à atmosphère ionisée
摘要
申请公布号
FR949950(A)
申请公布日期
1949.09.13
申请号
FRD949950
申请日期
1947.07.22
申请人
SOCIETE FRANCAISE RADIO-ELECTRIQUE
发明人
分类号
H01J5/32
主分类号
H01J5/32
代理机构
代理人
主权项
地址
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