Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621472 | System for inexpensive phase coherent subcarrier generation | Lawrence F. Heyl | 1997-04-15 |
| 5570296 | System and method for synchronized presentation of video and audio signals | Lawrence F. Heyl | 1996-10-29 |
| 5508812 | System for processing and recording digital color television signal onto analog video tape | David K. Stevenson, Lawrence F. Heyl | 1996-04-16 |
| 4593325 | Adaptive threshold document duplication | Thomas W. Bobick | 1986-06-03 |
| 4577235 | Text/continuous tone image decision processor | Paul G. Nietfeld | 1986-03-18 |
| 4566014 | Drop counter printer control system | Suresh C. Paranjpe, Burton W. Scott | 1986-01-21 |