Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8509394 | Automated ringback update system | Clifford J. Radziewicz, Mark R. Gregorek | 2013-08-13 |
| 8494146 | Ringback replacement insertion system | Clifford J. Radziewicz, Mark R. Gregorek | 2013-07-23 |
| 8385516 | Ringback blocking and replacement system | Clifford J. Radziewicz, Mark R. Gregorek | 2013-02-26 |
| 8369507 | Ringback update system | Clifford J. Radziewicz, Mark R. Gregorek | 2013-02-05 |
| 8121267 | Forked-call ringback replacement system | Clifford J. Radziewicz, Mark R. Gregorek | 2012-02-21 |
| 7953211 | Automated ringback update system | Clifford J. Radziewicz, Mark R. Gregorek | 2011-05-31 |
| 7920689 | Ringback replacement insertion system | Clifford J. Radziewicz, Mark R. Gregorek | 2011-04-05 |
| 7873148 | Handset originated programmable ringback replacement system | Clifford J. Radziewicz, Mark R. Gregorek | 2011-01-18 |
| 7769155 | Ringback/ringtone synchronization system | Clifford J. Radziewicz, Mark R. Gregorek | 2010-08-03 |
| 7664236 | Forked-call ringback replacement system | Clifford J. Radziewicz, Mark R. Gregorek | 2010-02-16 |
| 5854897 | Network communications marketing system | Clifford J. Radziewicz, Mark R. Gregorek | 1998-12-29 |
| 5557658 | Communications marketing system | Mark R. Gregorek | 1996-09-17 |
| 5428670 | Communications marketing system | Mark R. Gregorek | 1995-06-27 |
| 5321740 | Telephone marketing system | Mark R. Gregorek | 1994-06-14 |