Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315533 | Back-up uninterruptible power system | Frederick A. Stich, Donald K. Zahrte, Sr., Richard V. Baxter, Jr., Douglas C. Folts, Thomas Hubert +2 more | 1994-05-24 |
| 5295078 | Method and apparatus for determination of battery run-time in uninterruptible power system | Frederick A. Stich | 1994-03-15 |