1868 - Thomas Edison executed his first patent, by signing and dating his application. It was received by the U.S. Patent Office with an application date of 28 Oct 1868, and it was issued as No. 90,646 on 1 Jun 1869. The invention was an “Electrographic Vote-Recorder,” which can be used by legislative bodies, such as the U.S. Congress. It would enable the ligislators to vote for or against an issue by turning a switch to the right or left.
1953 - Patent for Ultrasonic Alarm
Bithdays
1776 - Peter Barlow (Inventor)
1787 - William Brockendon - Inventor
John Roger Commons
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