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发明名称
Anordning ved Dørklokker til Hindring af Misbrug ved Ringning.
摘要
申请公布号
DK51503(C)
申请公布日期
1936.04.06
申请号
DKD51503
申请日期
1934.10.05
申请人
CARL CHRISTENSEN
发明人
CARL CHRISTENSEN
分类号
主分类号
代理机构
代理人
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