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发明名称
METHOD AND APPARATUS FOR THE BILLING OF VALUE-ADDED COMMUNICATIONS CALLS
摘要
申请公布号
US5187710(A)
申请公布日期
1993.02.16
申请号
US19900629912
申请日期
1990.12.19
申请人
AT&T BELL LABORATORIES
发明人
CHAU, NGA V.;HAUPTMAN, REUBEN D.;KAUFMAN, DAVID D.;KITTREDGE, BARBARA J.;LAUBER, PAMELA J.;LINDBLAD, PATRICIA
分类号
H04M15/00;H04Q3/00;H04Q11/04
主分类号
H04M15/00
代理机构
代理人
主权项
地址
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