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发明名称
PERFECCIONAMIENTOS INTRODUCIDOS EN LA OBTENCIoN DE ALEACIONES DE RESISTENCIA ELÉCTRICA
摘要
申请公布号
ES137269(A1)
申请公布日期
1935.06.16
申请号
ES19690001372
申请日期
1935.02.19
申请人
R. S. BRITISH-DRIVER HARRIS COMPANY LIMITED
发明人
分类号
(IPC1-7):C22
主分类号
(IPC1-7):C22
代理机构
代理人
主权项
地址
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