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发明名称
Perfectionnements aux matières à conductibilité variable et aux appareils les utilisant
摘要
申请公布号
FR37650(E)
申请公布日期
1931.01.08
申请号
FRD37650
申请日期
1929.11.22
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
H01C7/04
主分类号
H01C7/04
代理机构
代理人
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地址
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