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发明名称
TONE DETECTOR
摘要
申请公布号
JPH0270147(A)
申请公布日期
1990.03.09
申请号
JP19880221264
申请日期
1988.09.06
申请人
CANON INC
发明人
TAKAHASHI FUTOSHI
分类号
H04L27/00
主分类号
H04L27/00
代理机构
代理人
主权项
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