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发明名称
Sicherheitsbriefumschlag
摘要
申请公布号
DE531651(C)
申请公布日期
1931.08.13
申请号
DED531651D
申请日期
申请人
PAUL PFITZNER
发明人
分类号
B65D27/30
主分类号
B65D27/30
代理机构
代理人
主权项
地址
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