Inventors' Day in United States
Inventors' Day in United States is held on February 11. This event in the second decade of the month February is annual. 
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Thomas Edison, in full Thomas Alva Edison, (born February 11, 1847, Milan, Ohio, U.S.—died October 18, 1931, West Orange, New Jersey), American inventor who, singly or jointly, held a world-record 1,093 patents. In addition, he created the world’s first industrial research laboratory.
His inventions included the phonograph, the carbon-button transmitter for the telephone speaker and microphone, the incandescent lamp, the first commercial electric light and power system, an experimental electric railroad, and key elements of motion-picture equipment.
Inventor's Day in Thailand on February 2
National Inventors' Day in Mexico on February 17
Invention Day in Japan on April 18
Bolivian Inventor's Day on April 23
World Technology Day for the Future on May 13
Inventors' Day in Hungary on June 13
Inventors' Day in Argentina on September 29