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经营范围
发明名称
DITCH MAGNET
摘要
申请公布号
US3498455(A)
申请公布日期
1970.03.03
申请号
USD3498455
申请日期
1968.01.19
申请人
DITCH MAGNETS INC.
发明人
JOHN H. KIRBY
分类号
B03C1/28;E21B21/06;(IPC1-7):B03C1/08
主分类号
B03C1/28
代理机构
代理人
主权项
地址
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