Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4353298 | Partial line turnaround for printers | Willard B. Greene, Ludwig R. Siegl, Delbert C. Thomas, Jr., Charles J. Weber, Lee T. Zimmerman | 1982-10-12 |
| 4261039 | Microprocessor controlled positioning system | John E. Bateson, Earl T. Brown, Hortensia E. Delgado, Ludwig R. Siegl, Delbert C. Thomas, Jr. | 1981-04-07 |