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经营范围
发明名称
Oscillograph recorder
摘要
申请公布号
US2898401(A)
申请公布日期
1959.08.04
申请号
US19550509563
申请日期
1955.05.19
申请人
HALLER, RAYMOND AND BROWN, INC.
发明人
MCLUCAS JOHN L.
分类号
G01R13/20
主分类号
G01R13/20
代理机构
代理人
主权项
地址
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