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U.S. patents available from 1976 to present.
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The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.

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Number of patents: 1
Last date: July 09, 1991

Number	Title	Issue Date
5029997	Stop-frame animation system An stop motion animation sequence of a tangible object is made by the steps of making a series of drawings representing three-dimensional object to be animated in various sequential positions; sequentially embodying the drawings on a projection medium suc...	07/09/1991