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发明名称
Electrophotographic oscillograph for observing slow recurrent signals
摘要
申请公布号
US2986442(A)
申请公布日期
1961.05.30
申请号
US19560598860
申请日期
1956.07.19
申请人
CENTURY GEOPHYSICAL CORPORATION
发明人
BRODING ROBERT A.
分类号
G01R13/04;G03G15/22
主分类号
G01R13/04
代理机构
代理人
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地址
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