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经营范围
发明名称
Multifrequency oscillator
摘要
申请公布号
US2761909(A)
申请公布日期
1956.09.04
申请号
US19530333763
申请日期
1953.01.28
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
JR. ROBERT L. WALLACE,
分类号
H04M19/04
主分类号
H04M19/04
代理机构
代理人
主权项
地址
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