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经营范围
发明名称
TELEPHONE ON-HOLD DEVICE.
摘要
申请公布号
EP0313562(A4)
申请公布日期
1989.07.06
申请号
EP19870904223
申请日期
1987.06.29
申请人
FORBES, ANTHONY
发明人
FORBES, ANTHONY
分类号
H04M1/00;H04M1/80;H04M3/428
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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