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发明名称
Schulwandtafel
摘要
申请公布号
DE1654764(A1)
申请公布日期
1969.06.12
申请号
DE19671654764
申请日期
1967.01.30
申请人
WALTER WEYEL,SCHULTAFELFABRIK
发明人
HERMANN WEYEL,KARL
分类号
A47B97/02;B43L1/06
主分类号
A47B97/02
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代理人
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