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发明名称
Perfectionnement aux résistances électriques
摘要
申请公布号
FR729934(A)
申请公布日期
1932.08.03
申请号
FRD729934
申请日期
1931.03.26
申请人
LE CARBONE
发明人
分类号
H01C10/12
主分类号
H01C10/12
代理机构
代理人
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