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发明名称
Hul Jærnsvelle af kasseformet Tværsnit.
摘要
申请公布号
DK43404(C)
申请公布日期
1930.11.24
申请号
DKD43404
申请日期
1929.10.22
申请人
EMIL CAHN
发明人
EMIL CAHN
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主分类号
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