The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 7287938 | Machine tool A machine tool has a rotatable tool holder formed with an outwardly open seat having an outwardly directed floor and a cartridge engaged in the seat, carrying a cutting insert, and formed with an inwardly open groove defining a groove axis and having a surface confr... | 10/30/2007 |