Day in History Archive April 10

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Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. All will eventually be either verified or removed.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-)
 

April 10

1790: The U.S. patent system was established. 1849: Walter Hunt patented the safety pin. 1863: Paul-Louis-Toussaint Héroult, inventor of the electric arc furnace, was born. 1900: Arnold Beckman, founder of Beckman Instruments, was born. 1912: The luxury liner Titanic set sail from Southampton, England, on its ill-fated maiden voyage. 1930: The first synthetic rubber was produced. 1936: The 200" mirror arrived in Pasadena, CA, for Palomar Observatory's Hale Telescope. 1984: The damaged Solar Max satellite was snared by the Challenger space shuttle.