Friday, March 15, 2013

21 April Knowledge History - Science, Engineering and Management


Secretaries' Day
http://www.nowpublic.com/culture/administrative-professionals-day-2010-secretarys-day-history-2608632.html


Birthdays

NP Winners

1882 Percy Williams Bridgman - Physics
1889 Paul Karrer  - Chemistry


Patents

1857 Albert Douglas patented a ladies bustle.
1931 Ester Kiefer received a patent for ornamental paper.


Science, Engineering and Management Knowledge History of the Day - Index for the Year

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