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发明名称
Steilsichtkartei mit seitlich gestaffelten Karten
摘要
申请公布号
DE706406(C)
申请公布日期
1941.05.26
申请号
DE1937D075948D
申请日期
1937.08.15
申请人
FIRMA WILHELM DUBBERKE
发明人
DUBBERKE WILHELM
分类号
B42F17/00;B42F17/02
主分类号
B42F17/00
代理机构
代理人
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地址
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