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 |
| 4775782 | Checkout counter with remote keyboard writing pad and display A checkout counter includes an optical scanning system mounted therein and includes a cover member positioned in the top surface of the counter having an aperture through which the scanning system will scan a coded label on the merchandise item positioned... | 10/04/1988 |
| 4189708 | Method and apparatus for controlling access to a facility The system denies unauthorized access to a locked facility by a person having a weight characteristic differing from that of the weight characteristic of the person locking a facility such as an automotive ignition system. The system comprises a method an... | 02/19/1980 |
| 3937929 | Method for identifying selected inventory items and reading the sum of their values A method and apparatus for distributing and controlling inventories of food items and the like in which a plurality of individual elements are coded to identify both a corresponding inventory item and a magnitude such as a price associated with that inven... | 02/10/1976 |
