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 |
| 4314595 | Method of forming nondefective zone in silicon single crystal wafer by two stage-heat treatment A silicon single crystal wafer is subjected to two-stage heat treatment. In the first-stage it is heated at a temperature within the range of between 500° C. and 1,000° C. Subsequently the thus heated wafer is heated at a temperature higher than that at... | 02/09/1982 |
| 4217502 | Converter producing three output states An output circuit is provided in which a first IG-FET of a first conductivity type is connected between a first potential supply terminal and an output terminal and having its substrate controlled by a third potential higher than the first potential of th... | 08/12/1980 |
