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发明名称
REGELBARE NEBENLUFTZUFUEHRUNG FUER STAUBSAUGEVORRICHTUNGEN.
摘要
申请公布号
DE1742138(U)
申请公布日期
1957.03.28
申请号
DE195600P0354U
申请日期
1956.08.16
申请人
VAN DER HEEM N. V.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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