Pyrex from England
JAJ Pyrex: A Brief History - James A Jobling (JAJ) took over the Wear Flint Glass Works in Sunderland, UK in 1885. The company acquired the patent rights to produce Pyrex in 1921 and continued to create Pyrex for another 50 years. In 1973, Jobling's license expired and Corning took control of the company and the Pyrex England stamp was used.