Lester Lubin, 94, of West Hartford, formerly of Boca Raton, Fla., died May 31.  He was the widower of Belle (Yoken) Lubin.  Born in Hartford, he was the son of Celia and Robert Lubin.  He was a World War II U.S. Army veteran. He is survived by his sons, Barry of Burlington, and Sheldon of West Hartford; a brother and sister-in-law, Milton and Edith Lubin of Del Ray Beach, Fla.