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经营范围
发明名称
Perfectionnements à des dispositifs à décharge électronique
摘要
申请公布号
FR798597(A)
申请公布日期
1936.05.20
申请号
FRD798597
申请日期
1935.10.26
申请人
LE MATERIEL TELEPHONIQUE, SOCIETE ANONYME
发明人
分类号
H01J1/20
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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