Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323110 | Food preparation process | Harry A. Rubbright | 1982-04-06 |
| 4254824 | Food preparation apparatus | — | 1981-03-10 |
| 4232789 | Food serving tray for use in a food preparation unit | — | 1980-11-11 |
| 4203486 | Food preparation apparatus and process | Harry A. Rubbright | 1980-05-20 |
| 4194109 | Food serving tray and supporting heater shelf | — | 1980-03-18 |