Issued Patents All Time
Showing 26–50 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8296259 | Methods and systems for inventory management | David S. Trandal | 2012-10-23 |
| 8285604 | Methods and systems for receipt management and price comparison | David S. Trandal | 2012-10-09 |
| 8229861 | Methods and systems for online warranty management | David S. Trandal | 2012-07-24 |
| 8219558 | Methods and systems for inventory management | David S. Trandal | 2012-07-10 |
| 8213581 | Apparatus and methods for telecommunication authentication | David S. Trandal | 2012-07-03 |
| 8165278 | Enhanced service levels for call-processing services | David S. Trandal, David F. Hofstatter, Bob F. Smith | 2012-04-24 |
| 8135726 | Methods and systems for inventory management | David S. Trandal | 2012-03-13 |
| 8081337 | Facsimile telecommunications system and method | David S. Trandal, Leland W. Kirchhoff, Robert A. Dolan, David F. Hofstatter | 2011-12-20 |
| 8064588 | Systems and methods for call screening | David S. Trandal, Robert F. Smith | 2011-11-22 |
| 7962485 | Methods and systems for inventory management | David S. Trandal | 2011-06-14 |
| 7907933 | Call routing apparatus | David S. Trandal | 2011-03-15 |
| 7899823 | Methods and systems for inventory management | David S. Trandal | 2011-03-01 |
| 7869076 | Facsimile telecommunications system and method | David S. Trandal, Leland W. Kirchhoff, Robert A. Dolan, David F. Hofstatter | 2011-01-11 |
| 7822188 | Methods and apparatus for providing expanded telecommunications service | Leland W. Kirchhoff, David S. Trandal, Colin D. Kelley, Robert F. Smith, David F. Hofstatter +1 more | 2010-10-26 |
| 7792709 | Methods and systems for receipt management and price comparison | David S. Trandal | 2010-09-07 |
| 7742586 | Enhanced service levels for call-processing services | David S. Trandal, David F. Hofstatter, Bob F. Smith | 2010-06-22 |
| 7636428 | Systems and methods for call screening | David S. Trandal, Robert F. Smith | 2009-12-22 |
| 7508927 | Methods and apparatus for returning a call over a telephony system | David S. Trandal, Colin D. Kelley | 2009-03-24 |
| 7480065 | Facsimile telecommunications system and method | David S. Trandal, Leland W. Kirchhoff, Robert A. Dolan, David F. Hofstatter | 2009-01-20 |
| 7460653 | Apparatus and methods for telecommunication authentication | David S. Trandal | 2008-12-02 |
| 7308081 | Methods and systems for telephony call completion | David S. Trandal | 2007-12-11 |
| 7292841 | Call routing apparatus | David S. Trandal | 2007-11-06 |
| 7266185 | Methods and apparatus for returning a call over a telephony system | David S. Trandal, Colin D. Kelley | 2007-09-04 |
| 7103167 | Systems and methods for call screening | David S. Trandal, Robert F. Smith | 2006-09-05 |
| 6968174 | Call routing apparatus | David S. Trandal | 2005-11-22 |