The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 4690573 | Adjuster for thrust washer wear A take up adjuster for a swivel mounted on a structure for swiveling about a pin which utilizes a first pair of wedge plates having sloping surfaces therein for moving towards each other and a second pair of wedge plates having complimentary sloping surfa... | 09/01/1987 |
| 4647228 | Height adjusting device for machines or machine elements A height adjusting device for machines or machine elements comprises three adjustment members positioned atop one another and together determining two sets of opposing surfaces. These surfaces allow a gyroscopic movement of the uppermost adjustment member... | 03/03/1987 |
| 4298028 | Starting valve and mounting therefor A starting valve is disclosed having a starter choke valve and a poppet valve which is kept closed by the starter choke valve when the choke valve is in an open position. For mounting the starter choke valve there is provided a choke shaft and a bushing s... | 11/03/1981 |
| 4124037 | Fluid flow regulator The shaft for the flap of a fluid flow regulator extends through the tubular housing of the regulator and its end portions are received in thrust bearings which subject the shaft to axial stresses. The bearings have internally threaded sleeves which are b... | 11/07/1978 |