Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6463139 | Combination pre-paid and calling card | Louis N. Delery, Leonard Matulewski | 2002-10-08 |
| 6385308 | Telephone system and method for personalized announcements | Steven Cohen, A. Helen McGrath, Ronald Nemeth | 2002-05-07 |
| 6137872 | Combination pre-paid and calling card | Louis N. Delery, Leonard Matulewski | 2000-10-24 |
| 5946380 | Communications system and method with call expenditure control | Steve L. Cohen, Leonard Matulewski, Alan B. Moshinsky, Kathleen T. Quinn, Usha Rao | 1999-08-31 |
| 5392343 | On demand language interpretation in a telecommunications system | Alan N. Dunn, Paula M. Goldstein, Edgar J. Grijalva, Michael Neal, Christine Patricia Peterson +1 more | 1995-02-21 |