The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 4232613 | Armor plated safe A safe having an armor plated housing and a armor plated door is provided with an automatic locking system for the door. Within the door an electric gear motor is disposed operating when energized the locking system. The electric motor is controlled by a ... | 11/11/1980 |