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发明名称
MAGNETTAFEL.
摘要
申请公布号
DE1749779(U)
申请公布日期
1957.08.01
申请号
DE195700H4977U
申请日期
1957.05.14
申请人
HERMANN HOLTZ
发明人
HERMANN HOLTZ
分类号
主分类号
代理机构
代理人
主权项
地址
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