Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822983 | Electrical heaters | Robert J. Bremner, Hugh Duffy | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822983 | Electrical heaters | Robert J. Bremner, Hugh Duffy | 1989-04-18 |