Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057697 | DC uninterrupted power supply having instantaneous switching followed by low impedance switching | Russell E. Hammond, Alan G. Shimp | 1991-10-15 |
| 5012121 | Electrical power supply for short term power interruptions | Russell E. Hammond, Alan G. Shimp, Francis B. Fassnacht | 1991-04-30 |