Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887028 | Watthour meter with isolation transformers having a feedback loop | John T. Voisine | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887028 | Watthour meter with isolation transformers having a feedback loop | John T. Voisine | 1989-12-12 |