发明名称 FUTURE BLOCKING OF INCOMING TELEPHONE CALLS
摘要 of the Invention Method and apparatus for screening telephone calls for use in conjunction with a telephone set as, opposed to a switch, which provides a capability of storing a telephone number for use in blocking calls from the telephone number, without the need for re-entering the telephone number.
申请公布号 CA2090536(A1) 申请公布日期 1993.09.03
申请号 CA19932090536 申请日期 1993.02.26
申请人 ROLM COMPANY 发明人 IGLEHART, DAVID;FORD, GORDON D.
分类号 H04M3/42;H04M1/663;H04Q3/58;(IPC1-7):H04M1/66 主分类号 H04M3/42
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