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发明名称
Method of and apparatus for measuring the length of magnetic material
摘要
申请公布号
US2466251(A)
申请公布日期
1949.04.05
申请号
US19440524215
申请日期
1944.02.28
申请人
MARTIN PHILIP W
发明人
MARTIN PHILIP W.
分类号
G01B7/04
主分类号
G01B7/04
代理机构
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