Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8019686 | Method and system for allowing simultaneous usage of prepaid services | Thomas Michael Bauer, Charles David Caldwell, Walter H. Hawkins, Robert Sayko | 2011-09-13 |
| 7627529 | Method and system for allowing simultaneous usage of prepaid services | Thomas Michael Bauer, Charles David Caldwell, Walter H. Hawkins, Robert Sayko | 2009-12-01 |
| 6389114 | Method and apparatus for relaying communication | Jac P. Dowens, Amy J. Rupert | 2002-05-14 |
| 5835570 | Voice-directed telephone directory with voice access to directory assistance | — | 1998-11-10 |