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发明名称
SWITCHING TYPE INTERPHONE
摘要
申请公布号
JPH0383443(A)
申请公布日期
1991.04.09
申请号
JP19890220587
申请日期
1989.08.28
申请人
MATSUSHITA ELECTRIC WORKS LTD
发明人
TANIGAWA YOSHIHIRO;MIZUGUCHI KEIICHI;UENO YOSHIAKI;AMANO MASAHIKO
分类号
H04N7/18;H04M9/00
主分类号
H04N7/18
代理机构
代理人
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地址
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