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经营范围
发明名称
Cathode ray oscillograph
摘要
申请公布号
US1977999(A)
申请公布日期
1934.10.23
申请号
US19330661098
申请日期
1933.03.16
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
PRINZ DIETRICH
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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