Inventor · disambiguated record

David K. Vognsen

Also filed as: VOGNSEN DAVID K

2 granted patents·79 citations·filing 2001–2001

61Inventor score

Technology areasH04M

Files withMCI INC1 MOORE RICHARD G1

Top patents by PatentIndex Score

2 records

0188US8175965B2System and method for providing prepaid services via an internet protocol network systemMOORE RICHARD G·Filed 2001·Granted May 8, 2012·77 cites·20 claims
0252US6782083B2ISN call interruptMCI INC·Filed 2001·Granted Aug 24, 2004·2 cites·26 claims

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David K. Vognsen — Patent Inventor | PatentIndex