TELEPHONE NETWORK CREDIT CARD CALLING APPARATUS AND METHOD OF OPERATION TO DETERMINE VALIDATION AND FRAUDULENT USE OF CREDIT CARDS IN PLACING TELEPHONE CALLS
摘要
申请公布号
US5163086(A)
申请公布日期
1992.11.10
申请号
US19900636051
申请日期
1990.12.31
申请人
AT&T BELL LABORATORIES
发明人
AHEARN, KATHLEEN M.;ALBAL, NANDAKISHORE A.;COTTRELL, DANIEL D.;HARRIS, RICHARD M.;LADIEU-WALTON, JULIE M.;RAZAVI, HAMID C.
