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发明名称
Filter arrangement
摘要
申请公布号
US1848221(A)
申请公布日期
1932.03.08
申请号
US19280281533
申请日期
1928.05.29
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
MCCURDY RALPH G.
分类号
H03H7/09
主分类号
H03H7/09
代理机构
代理人
主权项
地址
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