Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814651 | Explosion-proof electrical generator system | Viggo Elris, Roderick Michael Johnson, Robert R. Hamilton | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814651 | Explosion-proof electrical generator system | Viggo Elris, Roderick Michael Johnson, Robert R. Hamilton | 1989-03-21 |