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发明名称
PERMANENT MAGNET LIFTING DEVICE
摘要
申请公布号
CA696659(A)
申请公布日期
1964.10.27
申请号
CAD696659
申请日期
申请人
O. S. WALKER COMPANY
发明人
JOHN N. ENGELSTED;EDUARD BAUER
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主分类号
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