Inventor · disambiguated record
David C. Mcchristian
Also filed as: MCCHRISTIAN DAVID C · MCCHRISTIAN DAVID CASWELL
5 granted patents·377 citations·filing 1992–2002
85Inventor score
Technology areasH04M
Top patents by PatentIndex Score
5 records- 0186US5450477AMonitoring of charges debited to an account having an assigned limitAT & T CORP·Filed 1993·Granted Sep 12, 1995·202 cites·3 claims
- 0281US5287403AMethod and apparatus for processing telephone calls charged to credit cardsAT & T BELL LAB·Filed 1992·Granted Feb 15, 1994·87 cites·3 claims
- 0377US6856674B1Platform for prepaid calling card callsAT & T CORP·Filed 2002·Granted Feb 15, 2005·25 cites·20 claims
- 0461US5487107AMethod and apparatus for processing telephone calls charged to credit cardsAT & T CORP·Filed 1994·Granted Jan 23, 1996·30 cites·15 claims
- 0555US5684867ARemote data access for operator assistance callsLUCENT TECHNOLOGIES INC·Filed 1995·Granted Nov 4, 1997·33 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →