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发明名称
KEY TELEPHONE SYSTEM
摘要
申请公布号
JPH01261960(A)
申请公布日期
1989.10.18
申请号
JP19880092174
申请日期
1988.04.13
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
YAMAGUCHI HIROSHI
分类号
H04M3/56;H04Q3/58
主分类号
H04M3/56
代理机构
代理人
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