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发明名称
INTERPHONE EXCHANGE SYSTEM
摘要
申请公布号
PL274481(A1)
申请公布日期
1990.03.05
申请号
PL19880274481
申请日期
1988.09.01
申请人
RYDZEWSKI JACEK;GOLOS ZBIGNIEW
发明人
RYDZEWSKI JACEK;GOLOS ZBIGNIEW
分类号
H04M;(IPC1-7):H04M/
主分类号
H04M
代理机构
代理人
主权项
地址
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