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发明名称
MAGNETIC POLE INDICATOR
摘要
申请公布号
US3543146(A)
申请公布日期
1970.11.24
申请号
USD3543146
申请日期
1968.11.27
申请人
JOHN F. SHERWOOD
发明人
JOHN F. SHERWOOD
分类号
G01R19/14;(IPC1-7):G01R33/02
主分类号
G01R19/14
代理机构
代理人
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地址
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