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经营范围
发明名称
Resonator
摘要
申请公布号
US2492680(A)
申请公布日期
1949.12.27
申请号
US19450588199
申请日期
1945.04.13
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BOWEN ARNOLD E.
分类号
H01J25/60
主分类号
H01J25/60
代理机构
代理人
主权项
地址
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