Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642002 | Apparatus and methods for generating uninterruptible AC power signals | Donald C. Sorenson, Gregory Scott Zediker, Thomas S. Osterman | 1997-06-24 |
| 5638244 | Apparatus and methods for generating uninterruptible AC power signals | Donald C. Sorenson, Gregory Scott Zediker, Thomas S. Osterman | 1997-06-10 |