Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855721 | Alarm apparatus for a freezer | Robert Hallett | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855721 | Alarm apparatus for a freezer | Robert Hallett | 1989-08-08 |