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Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

  Day in Engineering History Archive - April 10
April 10

U.S. Patent Systems Began - Please click here to visit RF Cafe.

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.
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 ;-) A couple 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.

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Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

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