Dusan Alexander Koso passed quietly on January 5, 2018, at his Topsfield home as he wished.
Alex was born in Bratislava, Slovakia, in 1935. At the age of nine his family escaped the escalating war to relatively unscathed southwest Germany.
In 1952, he and his mother, as stateless citizens, moved to Minneapolis, Minnesota, where he learned English and attended high school.
Two years later he was accepted into MIT, where he majored in electrical engineering.
He received a bachelor’s degree and a professional degree in electrical engineering.
All but finished with his PhD, NASA called, needing Alex to do the mid-course navigation systems for the moon shots.
He received numerous rewards and recognition for his contributions to the fields of optics and electrical engineering.
Alex worked at MIT’s I-Lab, Honeywell and Draper Labs. Alex started his own company, I-Systems, making inspection systems for the printed circuit board industry. Machines were sold nationally and internationally.
Alex loved his work and his family and was always accommodating and agreeable — easy to like and admire.
His is survived by his second wife, Susan; his three sons: Jan of Seattle, Gregor of South Bend, Indiana, and Peter of Lexington; and stepsons Will Graceffa of Walpole and Jeffrey Graceffa of Crested Butte, Colorado. He had nine grandchildren.
At Alex’s request, there will be no funeral service. A celebration of his life will be held at a later date. Arrangements by the Whittier-Porter Funeral Home of Ipswich.