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发明名称
Sound-activated code-controlled detection system for telephones
摘要
申请公布号
IT1177531(B)
申请公布日期
1987.08.26
申请号
IT19840047627
申请日期
1984.02.01
申请人
INTERNATIONAL MOBILE MACHINES CORP
发明人
SELIGSOHN SCOTT;BOLGIANO DUANE RIDGELY;SELIGSOHN SHERWIN I
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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