Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6014228 | Method and apparatus for delivering secured hard-copy facsimile documents | — | 2000-01-11 |
| 5774535 | Telecommunication-time metering device utilizable for prepayment of information transfers between information transferring devices within a telecommunication network | — | 1998-06-30 |
| 5440621 | Apparatus for prepayment of telecommunication connections in a telecommunication switching network without utilization of rate schedules and call cost computations | — | 1995-08-08 |
| 5421779 | Composite recording materials, facsimile instruction labels and method of delivering hard copies of confidential messages using the same | — | 1995-06-06 |
| 5359642 | Method and apparatus for prepayment of telecommunication connections by registered groups of subscribers in a telecommunication switching network | — | 1994-10-25 |
| 5265155 | Method and apparatus for prepayment of telecommunication connections in a telecommunication switching network | — | 1993-11-23 |
| 5255106 | Method and apparatus for delivering secured hard-copy facsimile documents | — | 1993-10-19 |
| 5085469 | Flexible composite recording material for facsimile machines | — | 1992-02-04 |