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发明名称
Dispositifs électriques comportant une structure unitaire scellée dans une enveloppe de verre
摘要
申请公布号
FR858436(A)
申请公布日期
1940.11.25
申请号
FRD858436
申请日期
1939.07.28
申请人
LE MATERIEL TELEPHONIQUE SOCIETE ANONYME
发明人
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
主权项
地址
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