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经营范围
发明名称
Cathode-ray oscillograph
摘要
申请公布号
US2227189(A)
申请公布日期
1940.12.31
申请号
US19370146967
申请日期
1937.06.07
申请人
RADIO CORPORATION
发明人
KNOLL MAX
分类号
H01J29/62
主分类号
H01J29/62
代理机构
代理人
主权项
地址
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