Egon Bittner ( April 16 , 1921 -- May 7 , 2011 ) was born in Czechoslovakia .
Egon Bittner ( April 16 , 1921 -- May 7 , 2011 ) was emigrated to the United States after World War II .
Egon Bittner ( April 16 , 1921 -- May 7 , 2011 ) was born in Czechoslovakia and emigrated to the United States after World War II .