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  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
RMS 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.
| Jan
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
Dec |
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. Many years ago,
I began commemorating the birthdays of notable people and events with
special RF Cafe logos.
Where available, I like to use images from postage stamps from the country where
the person or event occurred. Images used in the logos are often from open source
websites like Wikipedia, and are specifically credited with a hyperlink back to
the source where possible.
Fair Use laws permit
small samples of copyrighted content.
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