Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4450401 | Control circuit for automatic battery chargers | Donald J. Bosack, David K. Johansen | 1984-05-22 |
| 4439719 | Variable timing circuit for motive power battery chargers | Donald J. Bosack, David K. Johansen | 1984-03-27 |