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发明名称
Cathode-ray oscillograph
摘要
申请公布号
US1750661(A)
申请公布日期
1930.03.18
申请号
US19280263875
申请日期
1928.03.22
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
BOWN RALPH
分类号
H01J29/86
主分类号
H01J29/86
代理机构
代理人
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地址
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