Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4638498 | Digital timing system | Joseph O. Sinniger | 1987-01-20 |
| 4575809 | Digital timing method for spark advance | Joseph O. Sinniger | 1986-03-11 |
| 4408296 | Digital timing system for spark advance | Joseph O. Sinniger | 1983-10-04 |
| 4375209 | Digital timing system for spark advance | Joseph O. Sinniger | 1983-03-01 |
| 4249119 | Digital drive circuit for electric motor or the like | — | 1981-02-03 |
| 4206648 | Impedance measuring circuit | James W. Tuska | 1980-06-10 |