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经营范围
发明名称
ELECTRIC WAVE FILTERS
摘要
申请公布号
US3585537(A)
申请公布日期
1971.06.15
申请号
USD3585537
申请日期
1969.02.10
申请人
BELL TELEPHONE LABORATORIES INC.
发明人
ROBERT C. RENNICK;WARREN L. SMITH
分类号
H03H9/54;H03H9/56;H03H9/60;(IPC1-7):H03H9/32
主分类号
H03H9/54
代理机构
代理人
主权项
地址
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