Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9108263 | Welding power source with automatic variable high frequency | Alan Adam Manthe, Stephen Paul Ferkel | 2015-08-18 |
| 6605879 | Battery charger control circuit and an uninterruptible power supply utilizing same | Joseph R. Wade, Donald K. Zahrte, Sr. | 2003-08-12 |