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经营范围
发明名称
MULTIFREQUENCY SIGNAL GENERATOR
摘要
申请公布号
US3518572(A)
申请公布日期
1970.06.30
申请号
USD3518572
申请日期
1968.07.08
申请人
BELL TELEPHONE LAB. INC.
发明人
TADIKONDA N. RAO
分类号
H03B1/00;H03B5/24;H03B5/26;H04M1/50;(IPC1-7):H03B5/26
主分类号
H03B1/00
代理机构
代理人
主权项
地址
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