Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5379037 | Apparatus for decoding degraded data signals | Mark D. Marik, Roger L. Posthumus | 1995-01-03 |
| 5298897 | Method and apparatus for decoding two frequency (f/sf) data signals | Mark D. Marik, Roger L. Posthumus | 1994-03-29 |
| 5168275 | Method and apparatus for decoding two frequency (F/2F) data signals | Mark D. Marik, Roger L. Posthumus | 1992-12-01 |