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 |
| 4189712 | Switch and lock activating system and method A system and method are provided for opening a lock or activating a switch by electronically controlled means. In one form, a finger ring is provided which contains a code recording supported within or adjacent the crown thereof. When the hand of the pers... | 02/19/1980 |
