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发明名称
WAERMENDE BETTEINLAGE.
摘要
申请公布号
DE1611690(U)
申请公布日期
1950.08.17
申请号
DE194800D9190U
申请日期
1948.12.31
申请人
WALTHER HOFFMANN
发明人
WALTHER HOFFMANN
分类号
主分类号
代理机构
代理人
主权项
地址
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