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经营范围
发明名称
4-WIRED AMPLIFIER CIRCUIT FOR CONFERENCE TELEPHONE
摘要
申请公布号
JPS5913463(A)
申请公布日期
1984.01.24
申请号
JP19830116253
申请日期
1983.06.29
申请人
PHILIPS' GLOEILAMPENFABRIEKEN NV
发明人
ADORIANUSU UIRUHERUMUSU MARIA FUAN DEN ENDEN;YOBU FURANSHISUKASU BETORUSU FUAN MIRU
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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