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发明名称
Exchangeable composite advertisement
摘要
申请公布号
GB383000(A)
申请公布日期
1932.11.10
申请号
GB19310026903
申请日期
1931.09.26
申请人
JOHANNES KUEHN
发明人
分类号
G09F7/02
主分类号
G09F7/02
代理机构
代理人
主权项
地址
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