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经营范围
发明名称
Elektrisk Ringeapparat med Elementkasse.
摘要
申请公布号
DK43161(C)
申请公布日期
1930.10.13
申请号
DKD43161
申请日期
1929.02.16
申请人
JENS PORSBORG CHRISTENSEN
发明人
JENS PORSBORG CHRISTENSEN
分类号
主分类号
代理机构
代理人
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