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发明名称
Cathode-ray oscillograph
摘要
申请公布号
US1768875(A)
申请公布日期
1930.07.01
申请号
US19290373043
申请日期
1929.06.22
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
ACKERMANN OTTO
分类号
H01J31/12
主分类号
H01J31/12
代理机构
代理人
主权项
地址
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