Heyman, Moses David

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HEYMAN, MOSES DAVID (1896– ), U.S. inventor. Born in Newark, n.j., Heyman became president of a large mining company in Ecuador, and formed his own company in 1930. He invented many machines used in metalworking, mica, and other fields. Among them was the "mechanical hand" (1938). Heyman was the first person to make continuous sheets of synthetic mica.