U.S. patent system
was established. 1849: Walter Hunt patented
the safety pin. 1863:
, inventor of the electric arc furnace,
was born. 1900:
, founder of Beckman Instruments, was born. 1912:
The luxury liner
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
. 1984: The damaged
satellite was snared by the Challenger space shuttle.
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
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.