Birthdays
Nobel Prize Winners
1939 - Sidney Altman
http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1989/altman-facts.html
Patents
1878 Fire Escape Ladder patented by Joseph Winters.
Knowledge History of the Day - Index for the Year
Thursday, May 7, 2015
7 May Knowledge History - Science, Engineering and Management
Birthdays
Nobel Prize Winners
1939 - Sidney Altman
http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1989/altman-facts.html
Patents
1878 Fire Escape Ladder patented by Joseph Winters.
Knowledge History of the Day - Index for the Year
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