Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4197085 | Gas injectors for fluidized beds In an injector for supplying gas into a fluidized bed, a distributor having a plurality of spaced elements located within a particulate material forming a fluidized bed to extend generally transversely therein.... | 04/08/1980 |
