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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7346933 | Ultrasonic sensor component signal communication to standalone universal serial bus keyboard emulator for entry/exit computer proximity determination A device in one example comprises a standalone universal serial bus keyboard emulator and an ultrasonic sensor component. The standalone universal serial bus keyboard emulator is coupled with a computer through a universal serial bus port. The ultrasonic sensor comp... | 03/18/2008 |
| 5652563 | Safety system for a horse stable A safety system for a stable comprises "smart detectors" installed in the stable for detecting at least one abnormal condition in the stable, a siren and/or flashing strobe installed in each stall for spooking horses out of their stalls, an electro-magnet... | 07/29/1997 |
