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发明名称
SIDETONE ADJUSTING DEVICE
摘要
申请公布号
JPH0697999(A)
申请公布日期
1994.04.08
申请号
JP19920244590
申请日期
1992.09.14
申请人
RICOH CO LTD
发明人
SAKAKURA YOSHIFUMI
分类号
H04M1/58;(IPC1-7):H04M1/58
主分类号
H04M1/58
代理机构
代理人
主权项
地址
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