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发明名称
TONE GENERATOR
摘要
申请公布号
GB8301324(D0)
申请公布日期
1983.02.16
申请号
GB19830001324
申请日期
1983.01.18
申请人
PLESSEY CO PLC
发明人
分类号
H04M19/02;H04Q1/457;(IPC1-7):H04Q1/453
主分类号
H04M19/02
代理机构
代理人
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