Q:Facts: - known for: toughened glass - death date: 25 august 2003 - spouse: helen clark - birth date: 20 july 1916 - name: harold a. mcmaster - nationality: american - death place: perrysburg , ohio , u.s.a. - occupation: inventor , scientist , and entrepreneur Based on these bullet points, write a short biography describing the life of harold mcmaster .
A:
harold a. mcmaster -lrb- july 20 , 1916 -- august 25 , 2003 -rrb- was an inventor with over 100 patents and entrepreneur who founded four companies .fortune magazine called him '' the glass genius '' .he also worked on developing commercial-scale solar cell technology , and developed a new type of engine , the '' mcmaster rotary engine . ''mcmaster was an inventor early on .his father gave him a set of tools at age 6 .by 8 , he had built a set of farm machinery , by 10 , a threshing machine that husked corn , and by 12 he was making car motors .following his graduation from ohio state with a combined master 's degree in physics , mathematics , and astronomy in 1939 , mcmaster worked as the first research physicist ever employed by the libbey owens ford glass in toledo , ohio .he received his first patent during wwii for a periscope used by fighter pilots to see behind them .