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Walt Disney was no Mickey Mouse inventor. He devised a serious animation camera which he patented. With the device, his company created "Snow White".
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| Number | Title | Issue Date |
| 4140187 | Harrow support Support means for use in connecting a circular harrow to a tractor. The support means allow the harrow to pivot about two perpendicular, generally horizontal, axes thus permitting the harrow to more closely follow the contour of the ground being harrowed.... | 02/20/1979 |
| 4063596 | Soil cultivating machines A soil cultivating machine or rotary harrow has a row of tined soil working members that are driven about upwardly extending shafts. Further soil working or cultivating members between the driven members are mounted for free rotation about axes also locat... | 12/20/1977 |
