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发明名称
TELEPHONE EXCHANGE
摘要
申请公布号
JPH02309854(A)
申请公布日期
1990.12.25
申请号
JP19890131936
申请日期
1989.05.25
申请人
MATSUSHITA ELECTRIC WORKS LTD
发明人
HAMADA AKIHIKO
分类号
H04M1/72
主分类号
H04M1/72
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