Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7570022 | Variable battery refresh charging cycles | Andrew M. Zettel, Damon R. Frisch, Goro Tamai, Brian J. Koch | 2009-08-04 |
| 7557583 | System and method for monitoring an electrical power relay in a hybrid electric vehicle | Andrew M. Zettel, Michael J. Miller, James C. Gibbs | 2009-07-07 |