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发明名称
Laengs und quer ausziehbarer Bilderrahmen, insbesondere fuer Lehrmittel in Schulen
摘要
申请公布号
DE530430(C)
申请公布日期
1931.07.30
申请号
DED530430D
申请日期
1930.05.07
申请人
AUGUST SZYMANEK
发明人
分类号
A47B97/02
主分类号
A47B97/02
代理机构
代理人
主权项
地址
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