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经营范围
发明名称
Photographic waveform recorder for cathode-ray tube indicators
摘要
申请公布号
US2584175(A)
申请公布日期
1952.02.05
申请号
US19440548129
申请日期
1944.08.04
申请人
WILLIAMS EVERARD M
发明人
WILLIAMS EVERARD M.
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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