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发明名称
Crystal filter
摘要
申请公布号
US2908877(A)
申请公布日期
1959.10.13
申请号
US19550488032
申请日期
1955.02.14
申请人
GENERAL ELECTRIC COMPANY
发明人
TRUE THOMAS T.
分类号
H03G5/26;H03H9/54;H04N9/455
主分类号
H03G5/26
代理机构
代理人
主权项
地址
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