Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10148223 | Capacitor based automobile battery with backup LiFePo charging system and charging circuit | — | 2018-12-04 |
| 4307890 | Piston ring with chrome-filled groove | John E. Cromwell, Glenn F. Hyde | 1981-12-29 |