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发明名称
Electromechanical wave filter
摘要
申请公布号
US2231404(A)
申请公布日期
1941.02.11
申请号
US19390260544
申请日期
1939.03.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BLACKMAN RALPH B.;LAKATOS EMORY
分类号
H03H9/50
主分类号
H03H9/50
代理机构
代理人
主权项
地址
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