Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4450401 | Control circuit for automatic battery chargers | Frederic J. Lambert, David K. Johansen | 1984-05-22 |
| 4439719 | Variable timing circuit for motive power battery chargers | Frederic J. Lambert, David K. Johansen | 1984-03-27 |