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发明名称
TELEPHONE SELECTION CIRCUIT
摘要
申请公布号
GB1306701(A)
申请公布日期
1973.02.14
申请号
GB19700002755
申请日期
1970.01.20
申请人
OBERHOLZER M J
发明人
分类号
H04M1/65;H04M1/665;(IPC1-7):H04M1/64
主分类号
H04M1/65
代理机构
代理人
主权项
地址
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