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发明名称
Improved electrical resistance
摘要
申请公布号
GB499701(A)
申请公布日期
1939.01.27
申请号
GB19380011876
申请日期
1938.04.20
申请人
S.E.C.I. SOCIETA' ELETTROTECNICA CHIMICA ITALIANA
发明人
分类号
H01C1/146
主分类号
H01C1/146
代理机构
代理人
主权项
地址
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