Complex sentence: In 1945, a representative office opened in New York City and in 1952 Roamer Watches officially changed its name to Roamer Watch Co. SA. In 1955, Roamer patented an original Anfibio watertight watch case, which proved to be a commercial success.
Split into simpler sentences: In 1945, a representative office opened in New York City. In 1952 Roamer Watches officially changed its name to Roamer Watch Co. SA. In 1955, Roamer patented an original Anfibio watertight watch case, which proved to be a commercial success.