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发明名称
CONFERENCE TELEPHONE SET
摘要
申请公布号
JPS6424665(A)
申请公布日期
1989.01.26
申请号
JP19870179901
申请日期
1987.07.21
申请人
IWATSU ELECTRIC CO LTD;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
WATANABE KAZUYUKI;HIROMI YOSUKE;OIKAWA HIROSHI;NISHINO MASAKAZU;HIDA MIZUHIRO
分类号
H04M9/08;H04M9/00
主分类号
H04M9/08
代理机构
代理人
主权项
地址
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